Roberto G.
Roberto G. Baccala, San Diego, CA US
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20130295111 | METHODS AND COMPOSITIONS FOR TREATING DISORDERS ASSOCIATED WITH HYPERACTIVE IMMUNE SYSTEM - The present invention provides methods and compositions for treating disorders associated with hyperactive immune responses. The invention also provides methods for lithibiting activation of CD4 | 11-07-2013 |
Roberto G. Krenus, Piracicaba BR
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20090120396 | METHOD FOR COLD STARTING OF ETHANOL-FUELED ENGINES - A method for starting an internal combustion engine under cold conditions. The intake manifold throttle valve is held closed and spark ignition is suspended. Fuel and air are admitted into the cylinders and the pistons are cranked for a plurality of revolutions. During each engine revolution cycle, the fuel/air mixture is compressed and heated adiabatically by the energy of the engine starter motor, and the mixture is exhausted into the exhaust manifold. During valve overlap a portion of the mixture is withdrawn into the cylinder and recompressed in the next cycle. Additional fuel may be injected to replace lost fuel. After several engine cycles, the fuel/air mixture becomes heated to a temperature above the flashpoint of the mixture. Sparking is re-established to fire the warmed mixture, and the intake throttle valve is re-enabled. The first firing can provide sufficient heat to continue spark-firing of newly-introduced mixture thereafter. | 05-14-2009 |
Roberto G. Massolini, Giussago IT
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20120249189 | SINGLE-PULSE RESONANT GATE DRIVER FOR DRIVING SWITCHES IN RESONANT ISOLATED CONVERTERS AND OTHER SYSTEMS - A gate driving circuit includes a driving stage configured to receive an input signal and generate a gate drive signal for a gate of a transistor switch. The gate driving circuit also includes an LC circuit having an inductor and a gate capacitance of the transistor switch. The LC circuit is configured so that a pulse in the gate drive signal generates a ringing in the LC circuit at a resonance frequency of the LC circuit to transfer energy into and out of the gate capacitance of the transistor switch. A switch could selectively couple the gate of the transistor switch to ground in order to discharge the gate capacitance. A control circuit could be used to provide the input signal, and the control circuit could be configured to regulate a duty cycle of the gate drive signal by adjusting an off-time between consecutive pulses in the input signal. | 10-04-2012 |
20120250382 | RESONANT ISOLATED CONVERTERS FOR POWER SUPPLY CHARGE BALANCING SYSTEMS AND OTHER SYSTEMS - A converter circuit includes a primary side having a resonator and a first control circuit configured to control the resonator. The converter circuit also includes a secondary side having a resonant rectifier and a second control circuit configured to control the resonant rectifier. The converter circuit further includes a transformer configured to electrically isolate the primary side from the secondary side. The second control circuit is configured to turn the resonant rectifier on and off. The first control circuit may be configured to detect when the resonant rectifier is off and, in response, turn the resonator off without using a feedback signal from the secondary side. The first control circuit may be configured to detect when the resonant rectifier is off by detecting when input power to the primary side decreases. The resonant rectifier could be turned on and off by detuning the resonant rectifier. | 10-04-2012 |
Roberto G. YĆ©pez, San Francisco, CA US
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20130035065 | SECURE DEVICE CONFIGURATION PROFILES - A method for configuring a device includes receiving a first configuration profile comprising a first configuration and a first certificate and a second certificate, verifying the first configuration profile with the first certificate, receiving a user input indicating to accept the first configuration profile, configuring the device according to the first configuration, receiving a second configuration profile comprising a second configuration, verifying the second configuration profile with the second certificate and updating the device according to the second configuration, wherein the user is unaware of the updating. | 02-07-2013 |