Patents by Inventor David W. Friedel

David W. Friedel 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).

  • Two-part fast curing RTV silicone for formed-on-part automotive gasket
    Patent number: 5346940
    Abstract: A two-part RTV silicone preapplied compression gasket material for forming compression gaskets in place. The formulation includes a silanol terminated polyorganosiloxane, at least 5% by weight of the formulation of a tri- or tetra- methoxy or enoxy functional silane crosslinker, water, and, a condensation catalyst selected from the group consisting of stannous carboxylate compounds, dimethyl tin (IV) compounds and mixtures thereof. One of the two parts of the formulation includes the water component and the other of said two parts is a dry part and includes the crosslinker component.The formulation provides fast cure, fast development of compression set resistance and excellent ultimate compression set resistance.
    Type: Grant
    Filed: March 24, 1993
    Date of Patent: September 13, 1994
    Assignee: Loctite Corporation
    Inventors: David M. Brassard, Hans E. Haas, David W. Friedel