Patents by Inventor James D. Kupec

James D. Kupec 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: 4408303
    Abstract: A nonvolatile static random access memory cell (10) for storing data in a nonvolative state and recalling the data in its true state is disclosed. Cross-coupled transistors (12, 14) are provided having respective first and second nodes (16, 18) which are maintained at complementary logic states for volatile data storage. At least one tunnel capacitor (34), each having a floating node (36) is operatively coupled to the gate and drain terminals of one of said cross-coupled transistors (12, 14). At least one switch transistor (48) is operatively coupled to one of the first and second nodes (16, 18) and to one tunnel capacitor floating node (36). The at least one tunnel capacitor (34) and the at least one switch transistor (48) operatively coact for nonvolatile saving of volatile data stored in the cross-coupled transistors (12, 14), for recalling nonvolatile stored data in its true state to the cross-coupled transistors (12, 14), by the capacitive imbalance on the first and second nodes (16, 18).
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: October 4, 1983
    Assignee: Mostek Corporation
    Inventors: Daniel C. Guterman, James D. Kupec