Patent application number | Description | Published |
20100186960 | WELLBORE ANNULAR PRESSURE CONTROL SYSTEM AND METHOD USING ACCUMULATOR TO MAINTAIN BACK PRESSURE IN ANNULUS - A system for controlling wellbore annulus pressure during the drilling of a subterranean formation includes a drill string extending into a wellbore. A primary pump is configured for selectively pumping a drilling fluid through the drill string and into an annular space created between the drill string and the wellbore. A fluid discharge conduit is in fluid communication with the annular space for discharging the drilling fluid to a reservoir. A fluid back pressure system is connected to the fluid discharge conduit configured to selectively maintain pressure therein. The fluid back pressure system includes a fluid choke, a back pressure source and an accumulator hydraulically coupled between the back pressure source and the discharge conduit. | 07-29-2010 |
20110232914 | METHOD FOR MAINTAINING WELLBORE PRESSURE - A method for maintaining wellbore pressure includes reducing flow rate of a drilling fluid pump fluidly connected to a drill pipe in the wellbore. Flow out of the well is enabled into a first auxiliary line associated with a drilling riser. A seal around the drill pipe is closed. Fluid is pumped down a second auxiliary line at a rate selected to maintain a specific pressure in the wellbore. Drilling fluid flow through the drill pipe is stopped. | 09-29-2011 |
20110284290 | METHOD FOR DRILLING THROUGH NUISANCE HYDROCARBON BEARING FORMATIONS - A method for controlling entry of hydrocarbon into a wellbore from a subsurface formation includes determining whether hydrocarbon is entering the wellbore. Whether a rate of hydrocarbon entry into the wellbore is slowing is then determined Control of discharge from the wellbore is then switched from maintaining a selected wellbore pressure to controlling a rate of discharge of fluid from the wellbore to be substantially constant if the hydrocarbon entry rate is slowing. Control of discharge from the wellbore is returned to maintaining the selected wellbore pressure when the hydrocarbon stops entering the wellbore. | 11-24-2011 |
20120067591 | METHOD AND APPARATUS FOR PRECISE CONTROL OF WELLBORE FLUID FLOW - A method for controlling flow of fluid from an annular space in a wellbore includes changing a flow restriction in a fluid flow discharge line from the wellbore annular space. The flow restriction is changed at a rate related to a difference between at least one of a selected fluid flow rate out of the wellbore and an actual fluid flow rate out of the wellbore, and a selected fluid pressure in the annular space and an actual pressure in the annular space. | 03-22-2012 |
20120241163 | MANAGED PRESSURE DRILLING WITH RIG HEAVE COMPENSATION - A method for maintaining pressure in a wellbore drilled from a drilling platform floating on a body of water includes pumping fluid at a determined flow rate into a drill string disposed in a wellbore and measuring fluid pressure within a fluid discharge line of fluid returning from the wellbore. The fluid discharge line has a variable length corresponding to an elevation of the floating platform above the bottom of the body of water. The wellbore pressure is determined at a selected depth in the wellbore or at a selected position along a drilling riser or variable length portion of the fluid discharge line using known parameters/methods. The determined wellbore pressure is adjusted for changes in length of the fluid discharge line corresponding to changes in the elevation of the floating platform relative to the bottom of the body of water. | 09-27-2012 |
Patent application number | Description | Published |
20140247090 | RESONANT IMPEDANCE SENSING BASED ON CONTROLLED NEGATIVE IMPEDANCE - Resonant impedance sensing with a resonant sensor (such as LC) is based on generating a controlled negative impedance to maintain steady-state oscillation in response to changes in resonance state caused by interaction with a target. Resonant impedance sensing can include: (a) generating a controlled negative impedance at the sensor; (b) controlling the negative impedance based on a detected resonance state to substantially cancel the sensor resonant impedance, such that the sensor resonance state corresponds to steady-state oscillation, where the negative impedance is controlled by a negative impedance control loop that includes the sensor resonator as a loop filter; and (c) providing sensor response data based on the controlled negative impedance, such that the sensor response data represents a response of the sensor to the target. Thus, the response of the sensor to the target corresponds to the negative impedance required for steady-state oscillation. | 09-04-2014 |
20150184993 | RESONANT INDUCTIVE SENSING WITH ACTIVE RESONATOR TARGET - A resonant inductive sensing system includes an active resonator target that balances losses in the target resonator. The resonant sensor includes a sensor resonator LC circuit and a resonant target including a target resonator Lt/Ct circuit characterized by a loss factor Rts and a target quality factor Qt. The sensor resonator LC circuit and the target resonator Lt/Ct circuit are configured for operation as coupled resonators. The resonant sensor includes a sensor circuit configured to drive the resonant sensor, such that the sensor resonator LC circuit projects a magnetic sensing field based on a sensor quality factor Q, and an active negative resistance circuit −Ra coupled to the target resonator Lt/Ct circuit, and configured to substantially cancel the loss factor Rts, such that target quality factor Qt is substantially Qt=(√[Lt/Ct]/Rts)(RaRts/[RaRts−Lt/Ct]). | 07-02-2015 |
20150185294 | RESONANT IMPEDANCE SENSING WITH A NEGATIVE IMPEDANCE CONTROL LOOP IMPLEMENTED WITH SYNCHRONIZED CLASS D AND OUTPUT COMPARATORS - A resonant impedance sensing system includes a negative impedance control loop incorporating the resonator as a loop filter, and including a class D negative impedance stage implemented with a class D comparator, and a loop control stage implemented with an output comparator clocked (D_clk) by the class D comparator. The class D comparator receives resonator oscillation voltage, and generates a class D switching output synchronized with resonator oscillation frequency. A discrete current source (such as a current DAC) drives the resonator through an H-bridge switched by the class D switching output, so that the time average of the discrete drive current corresponds to resonator oscillation amplitude. Based on resonator oscillation amplitude, the output comparator provides a discrete loop control signal to the discrete current source, driving the resonator with a negative impedance that balances resonant impedance, thereby maintaining constant resonator oscillation amplitude corresponding to steady-state oscillation. | 07-02-2015 |
20150188522 | RESONANT IMPEDANCE SENSING WITH DRIVE CURRENT PULSE SHAPING TO REDUCE NOISE FOLDING - A resonant inductive sensing system includes in the drive current signal path of the resonator a pulse shaper for noise reduction, including reducing noise resulting from down modulation of signal energy around harmonics of the oscillator (multiples of the resonance frequency), and from uncertainty in the duration of the oscillation period. The pulse shaper is configured so that, for each modulation period of the drive current, consecutive drive current pulses are substantially identical. In example embodiments, an inductance-to-digital conversion (IDC) unit includes drive circuitry configured to drive excitation current pulses to the resonator with a modulation period synchronized with a resonator oscillation frequency, and pulse shaping circuitry configured to pulse shape the drive current pulses so that each pair of drive current pulses within a modulation period are substantially identical. | 07-02-2015 |
20150233695 | INDUCTIVE POSITION-SENSING - One example includes a position sensing system. The system includes an inductive position element that is moveable and comprises a position inductor. The system also includes a plurality of inductive load elements. Each of the inductive load elements includes a load inductor. Each of the plurality of inductive load elements can be selectively controlled in response to a modulation signal to provide a corresponding mutual inductance between the position inductor and the respective load inductor, the corresponding mutual inductance depending on a position of the inductive position element relative to the respective load inductor. The system further includes a position controller configured to generate the position and modulation signals and to calculate the position of the inductive position element relative to the plurality of inductive load elements based on a difference of the position signal with respect to the mutual inductance between the position inductor and each respective load inductor. | 08-20-2015 |
20150362337 | GEAR SENSING BASED ON DIFFERENTIAL/ASYMMETRIC INDUCTIVE SENSING - An inductive gear sensing system suitable for sensing gear (gear tooth) movement, such as some combination of speed, direction and position, based on differential sensor response waveforms. Example embodiments of inductive gear sensing with differential sensor response for different gear configurations include generating differential pulsed/phased sensor response signals from dual differential sensors based on axial (proximity-type) sensing for offset differential sensors (FIG. | 12-17-2015 |
Patent application number | Description | Published |
20140247040 | Position Detecting System - A position detecting system detects and responds to the movement of a target through a sensing domain area of a plane. The movement causes the amount of the target that lies within a sensing domain area to change. A portion of the target always lies within at least one of the sensing domain areas of the plane. | 09-04-2014 |
20150211895 | INDUCTIVE SENSING INCLUDING INDUCTANCE MULTIPLICATION WITH SERIES CONNECTED COILS - Inductive position sensing uses inductance multiplication with series connected sensor coils. In one embodiment, a first sensing domain area is established in a first target plane using first and second sensor coils disposed on a longitudinal axis, on opposite sides of the first target plane and connected in series, so that a series-combined inductance is a multiple of a sum of the respective first and second coil inductances. Target position within the first sensing domain area of the first target plane is detected based on the series-combined inductance of the first and second coils, which changes as the target moves within the first sensing domain area of the first target plane. Further sensitivity can be achieved by additional coils, series connected on the same longitudinal axis, each coil pair defining a sensing area on a respective target plane intermediate the coils. | 07-30-2015 |
20150323348 | ROTATIONAL SENSING WITH INDUCTIVE SENSOR AND ROTATING AXIAL TARGET SURFACE - A rotational sensing system is adaptable to sensing motor rotation based on eddy current sensing. An axial target surface is incorporated with the motor rotor, and includes one or more conductive target segment(s). An inductive sensor is mounted adjacent the axial target surface, and includes one or more inductive sense coil(s), such that rotor rotation rotates the target segment(s) laterally under the sense coil(s). An inductance-to-digital converter (IDC) drives sensor excitation current to project a magnetic sensing field toward the rotating axial target surface. Sensor response is characterized by successive sensor phase cycles that cycle between L | 11-12-2015 |
Patent application number | Description | Published |
20140187189 | METHOD OF AND SYSTEM FOR AUTHENTICATING AND OPERATING PERSONAL COMMUNICATION DEVICES OVER PUBLIC SAFETY NETWORKS - A public safety (PS) person having a PS communications device is able to authenticate and authorize operation of a non-PS, personal communications device over a PS network. The PS device issues a challenge, and the personal device responds to the challenge, when the devices are in close proximity. A conditional token having specified conditions is sent to the personal device, which captures information at an incident scene. The personal device attaches the conditional token to the captured information, and uploads the captured information with the attached token to the PS device to permit distribution of the captured information in accordance with the specified conditions of the attached conditional token. | 07-03-2014 |
20140187190 | METHOD AND APPARATUS FOR RECEIVING A DATA STREAM DURING AN INCIDENT - A method and apparatus are provided, for accessing a data-capture device in a different domain, by public safety wireless communications equipment, for the purpose of obtaining information at an incident. A dispatch controller of a public safety wireless communications system receives an access token from a server of a non-public-safety network, when an incident occurs. The token allows access to a data-capture device, and is associated with the incident. The dispatch controller sends the token to the data-capture device, receives a data stream, and forwards the data stream to a public safety wireless communication device. The public safety wireless communication device may itself discover and access the data-capture device, and may receive the data stream directly from the data-capture device. The public safety wireless communication device may forward the data stream and/or the access token to other public safety wireless communication devices. | 07-03-2014 |
20140189834 | METHOD AND APPARATUS FOR SINGLE SIGN-ON COLLABORATON AMONG MOBILE DEVICES - An apparatus for, and method of, single sign-on collaboration among a plurality of mobile devices, includes a server for issuing a first identity token to subsequently authenticate a user of a first of the mobile devices to a service provider, and for generating and sending a collaboration key to the first device based on the first identity token or user authentication. The first device generates and sends a collaboration credential based on the collaboration key to a second device paired with the first device. The server also issues a second identity token to subsequently authenticate to the service provider the user of the second device based on the collaboration credential received from the first device, to support single sign-on collaboration for the user across the plurality of mobile devices. | 07-03-2014 |
20140189840 | METHOD AND APPARATUS FOR SINGLE SIGN-ON COLLABORATION AMONG MOBILE DEVICES - A system for, and method of, single sign-on collaboration among a plurality of mobile devices, includes a server for issuing a first identity token to subsequently authenticate a user of a first of the mobile devices to a service provider, and for generating and sending a collaboration credential to the first device based on the first identity token or user authentication. The first device sends the collaboration credential generated by the server to a second device paired with the first device. The server also issues a second identity token to subsequently authenticate to the service provider the user of the second device based on the collaboration credential received from the first device, to support single sign-on collaboration for the user across the plurality of mobile devices. | 07-03-2014 |
20140189841 | APPARATUS FOR AND METHOD OF MULTI-FACTOR AUTHENTICATION AMONG COLLABORATING COMMUNICATION DEVICES - Multi-factor authentication is enabled across a plurality of communication devices. A user performs authentication by using a first authentication factor on a first of the communication devices, and by using a second authentication factor on a second of the communication devices. A collaboration credential is shared among the devices to enable the devices to collaborate with each other. Both of the authentication factors are bound together. A multi-factor identification token is issued to each device, to support multi-factor authentication for the user across the devices. | 07-03-2014 |
20150140950 | METHOD AND APPARATUS FOR RECEIVING A DATA STREAM DURING AN INCIDENT - A method and apparatus are provided, for accessing a data-capture device in a different domain, by public safety wireless communications equipment, for the purpose of obtaining information at an incident. A dispatch controller of a public safety wireless communications system receives an access token from a server of a non-public-safety network, when an incident occurs. The token allows access to a data-capture device, and is associated with the incident. The dispatch controller sends the token to the data-capture device, receives a data stream, and forwards the data stream to a public safety wireless communication device. The public safety wireless communication device may itself discover and access the data-capture device, and may receive the data stream directly from the data-capture device. The public safety wireless communication device may forward the data stream and/or the access token to other public safety wireless communication devices. | 05-21-2015 |
20150381577 | SYSTEM FOR, AND METHOD OF, AUTHENTICATING A SUPPLICANT, AND DISTRIBUTING GROUP KEYS TO GROUP MEMBERS, IN A MULTI-HOP WIRELESS COMMUNICATIONS NETWORK WITH ENHANCED SECURITY - An authenticator receives an authentication request from a supplicant requesting access to a wireless multi-hop network, and forwards the authentication request to one or more relays operative for relaying the authentication request to an authentication server. The server generates an authenticator key known to the authenticator, generates a supplicant key known to the supplicant, encrypts the supplicant key with the authenticator key, and transmits an authentication success message with the encrypted supplicant key to the authenticator to enable the supplicant to be added to the network without any relay having knowledge of the supplicant key. Encrypted group access keys are also distributed to authenticated members of a network group. | 12-31-2015 |
Patent application number | Description | Published |
20140019262 | PREDICTING VISIBILITY OF CONTENT ITEMS - Methods, systems, and apparatus, including computer programs encoded on a computer-readable storage medium, and including a method for predicting visibility of web pages. The method comprises identifying web pages that include slots for presenting content. The method further comprises, for each slot, creating a fingerprint based on a URL associated with the page and structural information associated with the slot's location on the page, determining a likelihood of the slot being visible when the web page is initially presented, the likelihood in the form of a predictive model, and saving the fingerprint and predictive model in a data structure. The method further comprises receiving a request for content from a web page, creating fingerprints associated with the web page, and comparing the fingerprints to fingerprints in the data structure. When a matching fingerprint is located, prediction data is used that is associated with a matching fingerprint for the web page. | 01-16-2014 |
20140372205 | SYSTEMS AND METHODS FOR SELECTING AND SERVING CONTENT ITEMS BASED ON VIEW PROBABILITY - A system may select and serve content items based on a view probability. The view probability may be determined using a view probability predictive model and one or more current viewability variables. Based on the determined view probability output by the view probability predictive model, a content item may be selected and served. A script may be included with or otherwise associated with the data output to effect presentation of the selected content item. The script outputs data indicative of whether the served content item is viewed on a display of a device. The script may output data indicating that the served content item is viewed when at least a predetermined percentage of the pixels of the served content item are within a viewable region for a period of time. A served content item may be determined to not have been viewed if a predetermined period of time elapses. | 12-18-2014 |
20140372230 | SYSTEMS AND METHODS FOR SELECTING AND SERVING CONTENT ITEMS BASED ON VIEW PROBABILITY - A system may select and serve content items based on a view probability. The view probability may be determined using a view probability predictive model and one or more current viewability variables. Based on the determined view probability output by the view probability predictive model, a content item may be selected and served. A script may be included with or otherwise associated with the data output to effect presentation of the selected content item. The script outputs data indicative of whether the served content item is viewed on a display of a device. The script may output data indicating that the served content item is viewed when at least a predetermined percentage of the pixels of the served content item are within a viewable region for a period of time. A served content item may be determined to not have been viewed if a predetermined period of time elapses. | 12-18-2014 |
20150269615 | Predicting Visibility of Content Items - Methods, systems, and apparatus, including computer programs encoded on a computer-readable storage medium, and including a method for predicting visibility of web pages. The method comprises identifying web pages that include slots for presenting content. The method further comprises, for each slot, creating a fingerprint based on a URL associated with the page and structural information associated with the slot's location on the page, determining a likelihood of the slot being visible when the web page is initially presented, the likelihood in the form of a predictive model, and saving the fingerprint and predictive model in a data structure. The method further comprises receiving a request for content from a web page, creating fingerprints associated with the web page, and comparing the fingerprints to fingerprints in the data structure. When a matching fingerprint is located, prediction data is used that is associated with a matching fingerprint for the web page. | 09-24-2015 |
Patent application number | Description | Published |
20120039864 | GENETIC POLYMORPHISMS ASSOCIATED WITH VENOUS THROMBOSIS, METHODS OF DETECTION AND USES THEREOF - The present invention is based on the discovery of genetic polymorphisms that are associated with coronary heart disease and in particular VT and response to drug treatment. In particular, the present invention relates to nucleic acid molecules containing the polymorphisms, variant proteins encoded by such nucleic acid molecules, reagents for detecting the polymorphic nucleic acid molecules and proteins, and methods of using the nucleic acid and proteins as well as methods of using reagents for their detection. | 02-16-2012 |
20120108651 | GENETIC POLYMORPHISMS ASSOCIATED WITH VENOUS THROMBOSIS AND STATIN RESPONSE, METHODS OF DETECTION AND USES THEREOF - The present invention provides compositions and methods based on genetic polymorphisms that are associated with response to statin treatment (particularly for reducing the risk of venous thrombosis). For example, the present invention relates to nucleic acid molecules containing the polymorphisms, variant proteins encoded by these nucleic acid molecules, reagents for detecting the polymorphic nucleic acid molecules and variant proteins, and methods of using the nucleic acid molecules and proteins as well as methods of using reagents for their detection. | 05-03-2012 |
20130045198 | GENETIC POLYMORPHISMS ASSOCIATED WITH VENOUS THROMBOSIS, METHODS OF DETECTION AND USES THEREOF - The present invention is based on the discovery of genetic polymorphisms that are associated with coronary heart disease and in particular VT and response to drug treatment. In particular, the present invention relates to nucleic acid molecules containing the polymorphisms, variant proteins encoded by such nucleic acid molecules, reagents for detecting the polymorphic nucleic acid molecules and proteins, and methods of using the nucleic acid and proteins as well as methods of using reagents for their detection. | 02-21-2013 |
20140186333 | GENETIC POLYMORPHISMS ASSOCIATED WITH VENOUS THROMBOSIS, METHODS OF DETECTION AND USES THEREOF - The present invention is based on the discovery of genetic polymorphisms that are associated with coronary heart disease and in particular VT and response to drug treatment. In particular, the present invention relates to nucleic acid molecules containing the polymorphisms, variant proteins encoded by such nucleic acid molecules, reagents for detecting the polymorphic nucleic acid molecules and proteins, and methods of using the nucleic acid and proteins as well as methods of using reagents for their detection. | 07-03-2014 |
Patent application number | Description | Published |
20090270332 | GENETIC POLYMORPHISMS ASSOCIATED WITH VENOUS THROMBOSIS, METHODS OF DETECTION AND USES THEREOF - The present invention is based on the discovery of genetic polymorphisms that are associated with venous thrombosis. In particular, the present invention relates to nucleic acid molecules containing the polymorphisms, variant proteins encoded by such nucleic acid molecules, reagents for detecting the polymorphic nucleic acid molecules and proteins, and methods of using the nucleic acid and proteins as well as methods of using reagents for their detection. | 10-29-2009 |
20120264692 | GENETIC POLYMORPHISMS ASSOCIATED WITH VENOUS THROMBOSIS, METHODS OF DETECTION AND USES THEREOF - The present invention is based on the discovery of genetic polymorphisms that are associated with venous thrombosis. In particular, the present invention relates to nucleic acid molecules containing the polymorphisms, variant proteins encoded by such nucleic acid molecules, reagents for detecting the polymorphic nucleic acid molecules and proteins, and methods of using the nucleic acid and proteins as well as methods of using reagents for their detection. | 10-18-2012 |
20130274195 | GENETIC POLYMORPHISMS ASSOCIATED WITH VENOUS THROMBOSIS, METHODS OF DETECTION AND USES THEREOF - The present invention is based on the discovery of genetic polymorphisms that are associated with venous thrombosis. In particular, the present invention relates to nucleic acid molecules containing the polymorphisms, variant proteins encoded by such nucleic acid molecules, reagents for detecting the polymorphic nucleic acid molecules and proteins, and methods of using the nucleic acid and proteins as well as methods of using reagents for their detection. | 10-17-2013 |
20140128362 | GENETIC POLYMORPHISMS ASSOCIATED WITH VENOUS THROMBOSIS AND STATIN RESPONSE, METHODS OF DETECTION AND USES THEREOF - The present invention provides compositions and methods based on genetic polymorphisms that are associated with response to statin treatment (particularly for reducing the risk of venous thrombosis). For example, the present invention relates to nucleic acid molecules containing the polymorphisms, variant proteins encoded by these nucleic acid molecules, reagents for detecting the polymorphic nucleic acid molecules and variant proteins, and methods of using the nucleic acid molecules and proteins as well as methods of using reagents for their detection. | 05-08-2014 |