Patents by Inventor Craig J. Luhrmann

Craig J. Luhrmann 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).

  • ROM with mask programmable page configuration
    Patent number: 4744053
    Abstract: The same basic ROM circuit may be used to provide memories of increased capacity for pre-existing systems having different fixed numbers of address inputs. The appropriate page configuration is selected to accommodate the number of address inputs in the system. The system is adapted to generate a page address signal having the required number of bits on the data bus. The selected page configuration is obtained by mask programming the address decoder and input buffer circuits. The page address signal from the data bus is routed through the data transfer buffers and stored in a RAM for use in conjunction with the row and column address inputs.
    Type: Grant
    Filed: July 22, 1985
    Date of Patent: May 10, 1988
    Assignee: General Instrument Corp.
    Inventor: Craig J. Luhrmann
  • Weight for submerged tubing
    Patent number: D926022
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: July 27, 2021
    Inventor: Craig J. Luhrmann