Patents by Inventor Norman C. Wittwer

Norman C. Wittwer 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).

  • Flip-flop detector array for minimum geometry semiconductor memory apparatus
    Patent number: 4402063
    Abstract: This invention furnishes a minimum geometry integrated circuit arrangement of flip-flop detectors for a random access memory array in MOS (metal oxide semiconductor) technology. By "minimum geometry" is meant that these flip-flops occupy no more lateral space than the memory cells occupy even when every cell is built within a lateral space of only twice the minimum feature size, that is, a space of twice the minimum width of a metallization line.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: August 30, 1983
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Norman C. Wittwer
  • Semiconductor integrated circuit protection arrangement
    Patent number: 4295176
    Abstract: An array of semiconductor circuits integrated in a single semiconductor body substrate, each circuit having a separate input terminal, is protected from overvoltages in the inputs by means of a separate diode for each such circuit connected between its protected input node and a reference terminal (V.sub.DD) in common with all the other circuits. In addition, the high current path of a single auxiliary transistor is arranged to provide, in the presence of overvoltages, a low resistance path between the reference terminal (V.sub.DD) and the wide area substrate contact V.sub.SS in order to protect the input nodes in case of overvoltages when reference terminal (V.sub.DD) is disconnected ("floating").
    Type: Grant
    Filed: September 4, 1979
    Date of Patent: October 13, 1981
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Norman C. Wittwer