Patents by Inventor Robert M. Foss

Robert M. Foss 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).

  • Method of producing polyurethane foams for low stress encapsulation
    Patent number: 4696776
    Abstract: A method for encapsulating electronic components in high acceleration and high thermal cycling environments. A liquid uncured thermal setting polyurethane formulation is mixed with a finely ground particulate foam which serves as a nucleating agent. The mixture is in accordance with the polyurethane formulation. The resultant foam contains open air pockets which allow it to be compressed and then re-expand.
    Type: Grant
    Filed: July 21, 1986
    Date of Patent: September 29, 1987
    Assignee: Motorola, Inc.
    Inventors: James R. Hooker, Robert M. Foss
  • Method of hermetically sealing electronic packages
    Patent number: 4572846
    Abstract: Electronic packages and the like, particularly finished packages with leaky welds, are hermetically sealed by vapor deposition of a polymer film through a sealable port. A high quality film is obtained by slow deposition of a monomer vapor which subsequently polymerizes. The process is not destructive due to the lack of high temperatures and curing agents. Extremely low permeability for common molecules and for water vapor is achieved by utilizing C-type para-xylylene as the polymer material.
    Type: Grant
    Filed: November 18, 1983
    Date of Patent: February 25, 1986
    Assignee: Motorola, Inc.
    Inventors: Robert M. Foss, Gerald R. Severson