Patents by Inventor Drew Wanderman

Drew Wanderman 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).

  • Semiconductor memory device having protection against alpha strike induced errors
    Patent number: 4954455
    Abstract: The invention comprises an improved bipolar memory device having enhanced protection against the effects of alpha particles comprising at least one memory cell having a buried layer forming at least a portion of the collector of one of the transistors in the memory cell, said buried layer being located sufficiently close to a base layer in only the memory portion of the device to provide a sufficiently high capacitance between said buried layer and said base layer to prevent the occurrence of a soft error caused by an alpha particle striking the structure without interfering with the speed of the device.
    Type: Grant
    Filed: October 18, 1988
    Date of Patent: September 4, 1990
    Assignee: Advanced Micro Devices
    Inventors: Drew Wanderman, Matthew Weinberg