Patents by Inventor Leonardus C. M. G. Pfennings, decease

Leonardus C. M. G. Pfennings, decease 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).

  • Integrated output buffer logic circuit with a memory circuit
    Patent number: 5087840
    Abstract: An integrated circuit having logic circuits and a logic output buffer, which circuit includes the following sub-circuits: a memory circuit and a logic output circuit, in which no tri-state occurs at the output during a sequence of data signals at the input, wherein the drive of the circuit by means of control signals is not critical over time because the first data signal from the sequence switches off the tri-state mode, the tri-state mode again being introduced if a control signal is furnished, and in the absence of this control signal, the last data signal is retained.
    Type: Grant
    Filed: February 13, 1991
    Date of Patent: February 11, 1992
    Assignee: U.S. Philips Corp.
    Inventors: Thomas J. Davies, Leonardus C. M. G. Pfennings, decease, by Henricus J. Kunnen, legal representative, Peter H. Voss, Cormac M. O'Connell, Cathal G. Phelan, Hans Ontrop