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Negrete, US
George R. Negrete, San Antonio, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20110268653 | Compositions and Methods Related to Acid Stable Lipid Nanospheres - The present invention relates generally to the fields of chemistry and biochemistry. More particularly, it concerns methods and compositions for the use of fatty asparagine, fatty cysteine, and fatty serine derivatives. | 11-03-2011 |
Mario Ramos Negrete, Montgomery, AL US
| Patent application number | Description | Published |
|---|---|---|
| 20090255487 | Water Heater Sealed Combustion Chamber Assembly - A fuel-fired water heater is provided with a combustion chamber assembly, representatively a sealed combustion chamber assembly, operative to create from combustion air delivered thereto via a circumferentially limited vertical side portion thereof a flow of primary combustion air to the underside of a centrally disposed fuel burner within the assembly via a first location underlying the burner, a first flow of secondary combustion air delivered to the burner via the first location, and a second flow of secondary combustion air delivered to the burner via a second location outwardly circumscribing the first location. | 10-15-2009 |
Michael George Negrete, Mountain View, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100141173 | LINEARITY IN LED DIMMER CONTROL - A flyback controller may generate a switching signal for controlling the delivery of input current into a primary winding of a transformer in a flyback converter that has a secondary winding in the transformer and that is driven by AC output from a dimmer control that is chopped at a phase angle based on a setting of the dimmer control. The flyback controller may include a tracking input configured to receive a dimmer output tracking signal that is representative of the instantaneous magnitude of the output from the dimmer control. The flyback controller may include an averaging circuit configured to average the dimmer output tracking signal so as to generate an average dimmer output signal that is representative of a time-averaged value of the dimmer output tracking signal. The flyback controller may be configured to cause the average output current in the secondary winding of the transformer to vary as a function of the average dimmer output signal when the phase angle exceeds a threshold. The flyback controller may be configured to generate the switching signal with a duty cycle that causes the luminance level of light produced by one or more LEDs to vary when the phase angle exceeds a threshold by what appears to the human eye to be a more linear function of the phase angle than if the luminance level actually varied as a linear function of the phase angle. | 06-10-2010 |
| 20100141174 | CURRENT RIPPLE REDUCTION CIRCUIT FOR LEDS - A powered LED circuit may include a power supply configured to generate and deliver an output current at a controllable average value with a substantial ripple component, one or more LEDs connected together, and a ripple reduction circuit connected to the power supply and to the one or more LEDs. The ripple reduction circuit may have a current regulator connected in series with the one or more LEDs which is configured to substantially reduce fluctuations in the current which flows through the one or more LEDs due to the ripple component of the output current, but not fluctuations in the current which flows through the one or more LEDs due to changes in the average value of the output current. | 06-10-2010 |
| 20100141177 | DIMMER-CONTROLLED LEDS USING FLYBACK CONVERTER WITH HIGH POWER FACTOR - A flyback controller generates a switching signal for controlling delivery of current into a primary winding of a transformer in a flyback converter. The controller may include an output current monitoring circuit configured to generate a signal representative of an average output current in a secondary winding of the transformer based on a peak input current in the primary winding and a duty cycle of current in the secondary winding. The flyback controller may generate a switching signal that causes a chopped AC voltage from a dimmer control to be converted by the flyback converter into an average output current from a secondary winding of the transformer that is DC isolated from the chopped AC voltage and that varies as a function of the setting of the dimmer control. The flyback controller may not utilize a signal from an opto-isolator. | 06-10-2010 |
| 20100141178 | DIMMER CONTROL LEAKAGE PULL DOWN USING MAIN POWER DEVICE IN FLYBACK CONVERTER - A flyback controller-may include a dimmer input configured to receive a chopped and rectified AC voltage. Each cycle of the signal may have an off period which is substantially attenuated but not always zero due to leakage of a dimmer control from which the chopped AC voltage originates, and an on period which substantially tracks the AC voltage. The ratio of the off period to the on period may be dependent upon a setting of the dimmer control. The flyback controller may include a control circuit configured to generate a switching signal based on the signal from the dimmer input. The switching signal may controllably oscillate between its on and off states during the on periods of the chopped and rectified AC voltage so as to controllably regulate current that is delivered by a secondary winding of a transformer in a flyback converter. The switching signal may be in the on state during the off periods of the chopped and rectified AC voltage, thereby preventing a voltage build up from the dimmer control leakage. | 06-10-2010 |
| 20100259192 | BUCK-MODE BOOST CONVERTER WITH REGULATED OUTPUT CURRENT - An LED driver circuit that includes a buck-mode boost converter that provides a regulated output current and that requires only a single connection to each channel of LEDs. The buck-mode boost controller may include a current regulator that includes an integrator. The current regulator may be configured to integrate a difference between a reference signal that is representative of the desired level of the average current through the electronic power switch and a detected signal that is representative of the actual current that is being delivered to the buck-mode boost circuit through the electronic power switch. The reference signal to the integrator may not change during operation of the buck-mode converter. The current regulator may be configured to deactivate the integrator and/or to disconnect the detected signal from the integrator while the electronic power switch is off. | 10-14-2010 |
Omar Negrete, Madison, WI US
| Patent application number | Description | Published |
|---|---|---|
| 20090080053 | STEPPING OPTICAL REDUCTION SYSTEM - A device and a method for synthesizing a microarray are provided. The device includes a reduction optics assembly and a target assembly. The reduction optics assembly is configured to receive a light array of selectable regions of light and dark areas, to reduce a size of the light array in two-dimensions, and to project a pattern of the light array on a target surface. The target assembly includes a first stage and a second stage. The first stage is configured to move the target surface in at least two directions in plane with the projected pattern with a first precision. The second stage is mounted to the first stage and is configured to move the target surface in the at least two directions in plane with the projected pattern with a second precision that is smaller than the first precision. | 03-26-2009 |
Oscar Negrete, Livermore, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20120004144 | MICROELECTROPORATION DEVICE FOR GENOMIC SCREENING - We have developed an microelectroporation device that combines microarrays of oligonucleotides, microfluidic channels, and electroporation for cell transfection and high-throughput screening applications (e.g. RNA interference screens). Microarrays allow the deposition of thousands of different oligonucleotides in microscopic spots. Microfluidic channels and microwells enable efficient loading of cells into the device and prevent cross-contamination between different oligonucleotides spots. Electroporation allows optimal transfection of nucleic acids into cells (especially hard-to-transfect cells such as primary cells) by minimizing cell death while maximizing transfection efficiency. This invention has the advantage of a higher throughput and lower cost, while preventing cross-contamination compared to conventional screening technologies. Moreover, this device does not require bulky robotic liquid handling equipment and is inherently safer given that it is a closed system. | 01-05-2012 |
Ricardo A. Negrete, Scotts Valley, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090172474 | Network Diagnostic Systems and Methods for Light Levels of Optical Signals - A network diagnostic system may include a network diagnostic device. The network diagnostic device may be configured to receive data indicating a light level of an optical signal and to perform at least one network diagnostic function at least partially in response to the receipt of the data. A network diagnostic method may include detecting a light level of an optical signal; and performing at least one network diagnostic function at least partially in response to the detection of the light level of the optical signal. Exemplary network diagnostic functions may include triggering an alarm; triggering a capture of at least a portion of one or more network messages; storing data indicating the light level of the optical signal on a computer readable medium (e.g., for use in subsequent reports); and/or any other suitable network diagnostic function. | 07-02-2009 |
| 20100077075 | Network Diagnostic Systems and Methods for Collecting Data From Network Nodes - A system may comprise a network diagnostic device. The network diagnostic device may be configured to instantiate objects of data collection classes. The data collection classes may be configured to collect data from nodes of a network. The data collection classes may, for instance, inherit an interface object from an ancestor data collection class, and the interface object may be configured to use a protocol to collect data from nodes of a network. The network diagnostic device may be configured to automatically detect a node type associated with a node of a network. The network diagnostic device may also be configured to instantiate a node-specific data collection object associated with the detected node type. The node-specific data collection object may be configured to collect data from nodes of the detected node type at intervals less than or equal to fifteen seconds. | 03-25-2010 |