Patents by Inventor David B. Chapman

David B. Chapman 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).

  • Dynamic random access memory
    Patent number: 5077693
    Abstract: A DRAM is operated based upon an external clock input, a column enable, and a row enable. The DRAM is accessed and row and column addresses are latched into buffers based upon the clock input.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: December 31, 1991
    Assignee: Motorola, Inc.
    Inventors: Kim C. Hardee, David B. Chapman, Juan Pineda