Patents by Inventor Raymond J. Gerhart

Raymond J. Gerhart 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 for removing volatile substances from polyphenylene ether resin blends
    Patent number: 5102591
    Abstract: A method for removing volatile substances from polyphenylene ether (PPE) resin blends in an extruder comprising adding a second thermoplastic resin downstream from the PPE feedport and one stage of water injection followed by vacuum venting is disclosed.
    Type: Grant
    Filed: December 27, 1989
    Date of Patent: April 7, 1992
    Assignee: General Electric Company
    Inventors: Alexandros Hasson, Raymond J. Gerhart