Patents by Inventor Matthew D. Clift

Matthew D. Clift 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).

  • Fabric printer ribbon with nigrosine ink
    Patent number: 5084333
    Abstract: A printer ribbon having nigrosine dye with hydroxide counter ion, preferably at 23% by weight, in an oleic acid vehicle to form an ink saturating a fabric. The ribbon has the long life of a dye-only fabric ribbon and is effective for both correspondence and bar code applications.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: January 28, 1992
    Assignee: Lexmark International, Inc.
    Inventors: Bradley L. Beach, Matthew D. Clift, Terence E. Franey, James M. Mrvos, Ann M. Piekunka, Agnes K. Zimmer