Patents by Inventor Cristiano Calligaro

Cristiano Calligaro 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).

  • Voltage generator circuit providing potentials of opposite polarity
    Patent number: 5546044
    Abstract: A circuit for generating positive and negative boosted voltages, comprising first and second voltage booster circuits, respectively for positive and negative voltages, which have output terminals interconnected at a common node. It comprises two tristate logic gate circuits for coupling said voltage booster circuits to a positive supply voltage generator and additional tristate logic gate circuits for driving the phases of charge pump circuits incorporated into the booster circuits. This voltage generating circuit may be integrated in single-well CMOS technology.
    Type: Grant
    Filed: September 26, 1994
    Date of Patent: August 13, 1996
    Assignee: SGS-Thomson Microelectronics S.r.l.
    Inventors: Cristiano Calligaro, Roberto Gastaldi, Piero Malcovati, Guido Torelli