Patent application number | Description | Published |
20080274561 | METHOD AND APPARATUS FOR DETERMINING A TOTAL CONCENTRATION OF A COMPONENT IN A MIXTURE OF COMPONENTS - The invention relates to a method and apparatus for determining a total concentration of a component in a sample, including a reactor for oxidizing or reducing the sample, a chromatographic column coupled to the reactor for separating the component in the sample, and an electrochemical gas sensor coupled to the chromatographic column for detecting the component. In further embodiments, a filter may be used instead of or in addition to the column. Moreover, multiple sensors may be used instead of or in addition to the column for simultaneously detecting multiple components. | 11-06-2008 |
20080289962 | ELECTROCHEMICAL SENSOR WITH DRY IONOMER MEMBRANE - A miniaturized gas sensor comprised of film type electrodes, on a non-conductive supportive substrate, and in contact with a dry ionomer electrolyte, for detection of toxic gases, i.e., carbon monoxide, and other oxidizable or reducible gases and vapors and method of making same is described. The all-solid planar sensor cell has two or more film type electrodes arranged on a non-conductive planar surface of a supportive substrate. Manufacturing the electrochemical sensor with dry ionomer prevents electrode flooding and allows for improved response time upon assembly. The sensor cell contains no liquid electrolyte and is operated in a constant-voltage, potentiostatic or potentiodynamic mode. A high sensitivity to a select gas or vapor is achieved by a three-phase contact area design for a sensing electrode, which provides contact with the solid ionomer electrolyte, as well as the gas sample via diffusion openings or holes that penetrate through the supportive substrate. | 11-27-2008 |
20080293158 | Method And Apparatus For Improved Gas Detection - The invention relates to a method and apparatus for providing a reactor having a heater, a passage for transporting a reactant, and a chamber containing a gas sample and being coupled to the passage for receiving the reactant and mixing the reactant with the gas sample. The reactor further includes a connector leading from the chamber to the heater for transporting a mixture of the reactant and gas sample, and wherein the heater heats the mixture of the reactant and gas sample. | 11-27-2008 |
20090317300 | Method and apparatus for determining a concentration of a component in an unknown mixture - The invention relates to a method and apparatus for determining a concentration of a component in an unknown mixture. The method includes the steps of preparing a reactant having a specified pH level and a specified temperature and combining the unknown mixture with the reactant. The method further includes varying the pH level and temperature of the combination of the reactant and the unknown mixture to facilitate converting at least one selected component. Upon varying the pH level and temperature, the method will release volatiles from the selected component(s). Based on these released volatiles, which indicate the concentration of the selected component(s), the method detects the indication. The apparatus for determining a concentration of a component in an unknown mixture includes a container having a specified volume, a reactant chamber, and a sample chamber. The receptacle contains a reactant, placed within the reactant chamber, having a predetermined pH level and a predetermined volume. The receptacle also has a headspace sampling interface in contact with the container for permitting connection to a headspace sampling device and a sample introduction interface for permitting connection to a sample injector to introduce a sample into the sample chamber. | 12-24-2009 |
20100242579 | SORBENT DEVICES WITH LONGITUDINAL DIFFUSION PATHS AND METHODS OF USING THEM - Certain aspects and examples are directed to sorbent devices and methods of using them. In certain embodiments, a sorbent device comprising a body comprising a sampling inlet, a base and a longitudinal diffusion path between the inlet and the base is provided. In some embodiments, the sorbent device can include at least two sorbent materials fluidically coupled to the longitudinal diffusion path, in which the sorbent materials are arranged from a material with a weakest sorbent strength to a material with a strongest sorbent strength with the weakest sorbent strength material adjacent to the sampling inlet. | 09-30-2010 |
20120285325 | METHODS AND DEVICES FOR CIRCULATING AIR - A gas chromatography system comprising a sample introduction device, an oven coupled to the sample introduction device and a detector coupled to the oven is disclosed. In certain examples, the oven may be configured to receive a chromatography column in a space in the oven. In some examples, the oven may be constructed and arranged to provide a substantially constant temperature to the space during an analysis stage of the gas chromatography system. | 11-15-2012 |
Patent application number | Description | Published |
20110242713 | PLANAR VOLTAGE PROTECTION ASSEMBLY - A voltage protection assembly includes a planar substrate, an input terminal, a capacitive element, an inductive element, and an output terminal. The substrate includes conductive traces with the input terminal conductively coupled with at least one of the traces. The capacitive element is electrically coupled with the input terminal. The inductive element is conductively coupled with the capacitive element. The output terminal is disposed on the substrate and is conductively coupled with the inductive element. The output terminal, the inductive element, the capacitive element, and the input terminal are connected in series to form a voltage protection circuit that filters one or more frequencies of a data signal transmitted through the voltage protection circuit. At least one of the capacitive element or the inductive element is entirely disposed within the thickness dimension of the substrate. | 10-06-2011 |
20110291787 | PLANAR INDUCTOR DEVICES - A planar inductor device includes a ferrite body and a conductive pathway. The ferrite body extends around an opening in the ferrite body. The conductive pathway includes an input section, a current-splitting section, a coil section, a current-combining section, and an output section connected with each other, the input section extending toward the opening in the ferrite body. The current-splitting section includes a plurality of conductive coils joined with the conductive pathway and electrically disposed parallel to each other. The coil section includes the conductive coils helically wrapped around the ferrite body. The current-combining section includes the conductive coils joined with each other. The output section includes the joined conductive coils extending out of the ferrite body. | 12-01-2011 |
20110291788 | PLANAR INDUCTOR DEVICES - A planar inductor device includes a substrate, a ferrite body in the substrate, upper and lower conductors, and conductive vias. The substrate vertically extends from an upper surface to an opposite lower surface. The substrate laterally extends from a first edge to a second edge. The upper conductors are disposed above the ferrite body. The lower conductors are disposed below the ferrite body. The conductive vias extend through the substrate and are conductively coupled with the upper conductors and with the lower conductors. The vias, the upper conductors, and the lower conductors form one or more conductive coils that encircle the ferrite body in the substrate. At least one of the first edge or the second edge of the substrate passes through one or more of the vias such that the vias are exposed at the at least one of the first edge or the second edge. | 12-01-2011 |
20110291789 | PLANAR INDUCTOR DEVICES - A multilayer inductor device includes a planar substrate, a ferrite body, and an outer and an inner conductive coil. The substrate includes plural dielectric layers with the ferrite body is disposed in the substrate. The outer and inner conductive coils are helically wrapped around the ferrite body. The outer conductive coil includes first upper conductors, first lower conductors, and first conductive vias vertically extending through the substrate and conductively coupled with the first upper and lower conductors. The inner conductive coil includes second upper conductors, second lower conductors, and second conductive vias vertically extending through the substrate and conductively coupled with the second upper and lower conductors. The inner conductive coil is disposed between the outer conductive coil and the ferrite body. | 12-01-2011 |
20120154097 | PLANAR ELECTRONIC DEVICE AND METHOD FOR MANUFACTURING - A method of manufacturing a planar board substrate for receiving a magnetic core. The method includes providing a cover layer having a layer side and providing a base layer having first and second sides. The base layer includes a material hole that extends completely through the base layer between the first and second sides. The method also includes coupling the cover and base layers to each other along the first side and the layer side. The cover layer extends over at least a portion of the material hole. The method also includes providing a dielectric member within the material hole, wherein a core-holding channel exists between the dielectric member and the base layer. The core-holding channel extends circumferentially around the dielectric member and is configured to have a magnetic core therein. | 06-21-2012 |
20140043130 | PLANAR ELECTRONIC DEVICE - A planar electronic device includes top conductors on a top side of a planar substrate connected to conductive vias and defining top conductor groups and bottom conductors on a bottom side connected to corresponding vias and defining bottom conductor groups. The conductors and vias define primary and secondary conductive loops with the top conductor group including at least one primary top conductor and at least one secondary top conductor and with the bottom conductor group including at least one primary bottom conductor and at least one secondary bottom conductor. The top conductors within each group have substantially similar layouts that are different from layouts of the immediately adjacent groups, and the bottom conductors within each group have substantially similar layouts that are different from layouts of the immediately adjacent groups. | 02-13-2014 |
20140043131 | PLANAR ELECTRONIC DEVICE - A planar electronic device includes a planar substrate having a cavity configured to receive a ferrite material body therein. The planar substrate has an upper side and a lower side and conductive vias extending through the substrate. Top conductors are provided on the upper side of the planar substrate and are electrically connected to corresponding conductive vias. Bottom conductors are provided on the lower side of the planar substrate and are electrically connected to corresponding conductive vias. The bottom conductors, top conductors and conductive vias define a primary conductive loop and a secondary conductive loop. An upper cover layer covers the upper side and has a high permittivity. The upper cover layer is positioned relative to the top conductors to increase capacitance between the primary and secondary loops. | 02-13-2014 |
20140097691 | INTELLIGENT POWER SENSING DEVICE - The power sensing device includes a power input interface in electrical communication with a current sensing circuit and a voltage sensing circuit. The current sensing circuit is connected to a load. The voltage sensing circuit is connected in parallel with the load. A metering integrated circuit and a micro-controller unit (MCU) are included. The metering integrated circuit receives a first analog signal indicating a load current value from the current sensing circuit, and a second analog signal indicating a load voltage value from the voltage sensing circuit. The metering integrated circuit converts first and second analog input signals to first and second digital signals, respectively, and generates the first and second digital signals as digital communication pulses to the MCU. A decoder circuit includes a communications port to send and receive data associated with a sensed current parameter and a sensed voltage parameter. | 04-10-2014 |
20140116758 | PLANAR ELECTRONIC DEVICE HAVING A MAGNETIC COMPONENT - A planar electronic device includes a dielectric substrate having a recess. A functional electrical component is disposed within the recess of the substrate. A vent opening extends within the substrate such that the vent opening intersects the recess within a thickness of the substrate. The vent opening is open to atmosphere such that the vent opening fluidly connects the recess to the atmosphere. | 05-01-2014 |