Patents by Inventor Werner Leske

Werner Leske 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).

  • Screen-printable paste for manufacturing electrically conductive coatings
    Patent number: 5011627
    Abstract: Membrane keyboards are manufactured using screen-printable, electrically conductive pastes consisting of 40 to 75% by weight of metal powder (silver, aluminum, copper and their mixtures), 5 to 55% by weight of an organic solvent and 5-20% by weight of and synthetic resin based on a thermoplastic epoxy or phenoxy resin with an average molecular weight of 10,000 to 250,000 and an epoxide content of 0 to 1.
    Type: Grant
    Filed: March 7, 1989
    Date of Patent: April 30, 1991
    Assignee: Degussa Aktiengesellschaft
    Inventors: Klaus Lutz, Hans-Joachim Baer, Karl-Anton Starz, Werner Leske, Harry Mueller