Patents by Inventor John W. Rea

John W. Rea 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).

  • Systems and methods for memory control
    Patent number: 5914543
    Abstract: A memory controller for supplying backup battery power when a main power supply voltage drops together with programmable plus power fail write protection. The controller includes supravoltage induced sleep mode operation, MOS switching between backup batteries during backup operation based on battery voltage levels and discharge circuitry for battery disposal.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 22, 1999
    Assignee: Dallas Semiconductor Corporation
    Inventors: Francis A. Scherpenberg, Eric W. Mumper, John W. Rea, Robert D. Lee
  • Systems and methods for memory control
    Patent number: 5581507
    Abstract: A memory controller for supplying backup battery power when a main power supply voltage drops together with programmable plus power fail write protection. The controller includes supravoltage induced sleep mode operation, MOS switching between backup batteries during backup operation based on battery voltage levels and discharge circuitry for battery disposal.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 3, 1996
    Assignee: Dallas Semiconductor Corporation
    Inventors: Francis A. Scherpenberg, Eric W. Mumper, John W. Rea, Robert D. Lee
  • Memory controller for nonvolatile RAM operation, systems and methods
    Patent number: 5315549
    Abstract: A memory controller for supplying backup battery power when a main power supply voltage drops together with programmable plus power fail write protection. The controller includes supravoltage induced sleep mode operation, MOS switching between backup batteries during backup operation based on battery voltage levels and discharge circuitry for battery disposal.
    Type: Grant
    Filed: June 11, 1991
    Date of Patent: May 24, 1994
    Assignee: Dallas Semiconductor Corporation
    Inventors: Francis A. Scherpenberg, Eric W. Mumper, John W. Rea, Robert D. Lee