Patents by Inventor David R. Klueh

David R. Klueh 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).

  • Reduced thickness resin substrate in film printing ribbon
    Patent number: 4931348
    Abstract: A very thin film ribbon with good printing and lift-off correction characteristics is achieved by using a blend of polyethylene and isotactic polypropylene as the substrate material. Thicker ribbons with the substrate yield dense printing and print well on rough papers.
    Type: Grant
    Filed: August 31, 1987
    Date of Patent: June 5, 1990
    Assignee: International Business Machines Corporation
    Inventors: David R. Klueh, Jack W. Morris, Kent G. Urdahl, Matthew K. Zimmer
  • Aliphatic polyurethane matrix transfer medium and porous magnesium silicate filler
    Patent number: 4585692
    Abstract: A matrix transfer medium with the binder being an aliphatic polyester polyurethane. This is formed directly on an untensilized polyethylene terephthalate film substrate. Porous magnesium silicate in minor amounts as a filler beneficially controls ink flow at printing. Overall good performance as to both ribbon feed and printing is realized.
    Type: Grant
    Filed: June 15, 1984
    Date of Patent: April 29, 1986
    Assignee: International Business Machines Corp.
    Inventors: David R. Klueh, Benjamin F. Livingston, James F. Martone, Martin J. Zutt, Jr.