Patents by Inventor William Joseph Weiche

William Joseph Weiche 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).

  • Polycarbonate ribbon for non-impact printing
    Patent number: 4103066
    Abstract: The present invention is concerned with a ribbon for non-impact printing. The ribbon comprises a transfer coating and a substrate which is a polycarbonate resin containing from about 15% to about 40% by weight of electrically conductive carbon black.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: July 25, 1978
    Assignee: International Business Machines Corporation
    Inventors: Gary Fred Brooks, Walter Crooks, William Joseph Weiche