Recently Issued Patents
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- Point-Wise Phase Matching for Nonlinear Frequency Generation in Dielectric Resonators
- Method and Circuit for Injecting a Precise Amount of Charge Onto a Circuit Node
- Electrolytes for Wide Operating Temperature Lithium-Ion Cells
Point-Wise Phase Matching for Nonlinear Frequency Generation in Dielectric Resonators
Patent Number: 9,285,652
Issued: 3/15/2016
Inventors: Nan Yu, Dmitry Strekalov, Guoping Lin, Josef Furst
An optical resonator fabricated from a uniaxial birefringent crystal, such as beta barium borate. The crystal is cut with the optical axis not perpendicular to a face of the cut crystal. In some cases the optical axis lies in the plane of the cut crystal face. An incident (input) electromagnetic signal (which can range from the infrared through the visible to the ultraviolet) is applied to the resonator. An output signal is recovered which has a frequency that is an integer multiple of the frequency of the input signal. In some cases a prism is used to evanescently couple the input and the output signals to the resonator.
Method and Circuit for Injecting a Precise Amount of Charge Onto a Circuit Node
Patent Number: 9,294,077
Issued: 3/22/2016
Inventors: Bruce Hancock
A method and circuit for injecting charge into a circuit node, comprising (a) resetting a capacitor's voltage through a first transistor; (b) after the resetting, pre-charging the capacitor through the first transistor; and (c) after the pre-charging, further charging the capacitor through a second transistor, wherein the second transistor is connected between the capacitor and a circuit node, and the further charging draws charge through the second transistor from the circuit node, thereby injecting charge into the circuit node.
Electrolytes for Wide Operating Temperature Lithium-Ion Cells
Patent Number: 9,293,773
Issued: 3/22/2016
Inventors: Marshall Smart and Ratnakumar Bugga
Provided herein are electrolytes for lithium-ion electrochemical cells, electrochemical cells employing the electrolytes, methods of making the electrochemical cells and methods of using the electrochemical cells over a wide temperature range. Included are electrolyte compositions comprising a lithium salt, a cyclic carbonate, a non-cyclic carbonate, and a linear ester and optionally comprising one or more additives.
