Patents by Inventor Derrick Leach

Derrick Leach 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: 5777935
    Abstract: A memory (10) such as a current sensing static random access memory (SRAM) achieves fast write recovery through bit line loads and two additional mechanisms. First, an additional load (252) on shared data lines also becomes active to speed the write recovery process. Second, multiple columns (200, 202, 204) are connected to common data lines during write recovery so that a column written to during a write cycle may be again precharged in part by charge sharing using the charge stored in other columns. These two mechanisms allow fast write recovery with minimum column pitch and avoid the problems which would be encountered if the loads were placed on the write data line.
    Type: Grant
    Filed: March 12, 1997
    Date of Patent: July 7, 1998
    Assignee: Motorola, Inc.
    Inventors: Dimitris C. Pantelakis, William L. Martino, Jr., Derrick Leach, Frank A. Miller, Wai T. Lau