Patents by Inventor German Ashkinazi

German Ashkinazi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5733815
    Abstract: A method of simultaneously forming a gallium arsenide p-i-n structure having p, i, and n regions, which includes heating to dissolve gallium arsenide in a solvent such as bismuth or gallium to form a saturated solution of gallium arsenide in the solvent, contacting the solution with a gaseous mixture, which mixture includes hydrogen, water vapor and products of reactions between the hydrogen and the water vapor with the solvent and with silicon dioxide, to form a contacted solution, coating a suitably selected substrate, such as a group III-V compound such as gallium arsenide, with the contacted solution, cooling the coated substrate to precipitate gallium arsenide from the contacted solution onto the substrate, and removing the substrate coated with a layer of gallium arsenide having a p-i-n structure which constitutes the product having an i region dopant concentration of less than about 10.sup.12 cm.sup.-3.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: March 31, 1998
    Assignee: Ramot University Authority for Applied Research & Industrial Development Ltd.
    Inventors: German Ashkinazi, Mark Leibovich, Boris Meyler, Menachem Nathan, Leonid Zolotarevski, Olga Zolotarevski
  • Patent number: 5680073
    Abstract: A controlled capacitor system, which includes a capacitor element (C1) and a forward-biased diode element (D2) connected in series with the capacitor element (C1). The system is such that the diode element (D2) has a capacitance which is less than the capacitance of the capacitance of the capacitor element (C1) when the diode element (D2) is under zero bias. The capacitance of the diode element (D2) is controlled by varying the forward current (I2) through the diode (D2). The forward current (I2) acting to control the capacitance of the diode element is selected such that the capacitance of the diode element (D2) is smaller than the capacitance of the capacitor element (C1) when the current (I2) through the diode element (D2) is below a minimum value. The capacitance of the diode element (D2) is bigger than the capacitance of the capacitor element (C1) when the current (I2) through the diode element (D2) exceeds a maximum value.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: October 21, 1997
    Assignee: Ramot University Authority for Applied Research & Industrial Development Ltd.
    Inventors: Menachem Nathan, Leonid Zolotarevski, Olga Zolotarevski, German Ashkinazi, Boris Meyler
  • Patent number: 5622877
    Abstract: A power GaAs Schottky diode with a chemically deposited Ni barrier having a reverse breakdown voltage of 140 V, a forward voltage drop at 50 A/cm.sup.2 of 0.7 V at 23.degree. C., 0.5 V at 150.degree. C. and 0.3 V at 250.degree. C. and having a reverse leakage current density at -50 V of 0.1 .mu.A/cm.sup.2 at 23.degree. C. and 1 mA/cm.sup.2 at 150.degree. C. The high-voltage high-speed power Schottky semiconductor device is made by chemically depositing a nickel barrier electrode on a semiconductor which includes gallium arsenide and then etching the device to create side portions which are treated and protected to create the Schottky device.
    Type: Grant
    Filed: October 21, 1994
    Date of Patent: April 22, 1997
    Assignee: Ramot University Authority for Applied Research & Industrial Development Ltd.
    Inventors: German Ashkinazi, Boris Meyler, Menachem Nathan, Leonid Zolotarevski, Olga Zolotarevski