Patents by Inventor Herbert A. Ehrenfreund

Herbert A. Ehrenfreund 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).

  • Insulative and cushioning interliner for garments and the like
    Patent number: 4171411
    Abstract: A durable, light-weight interliner exhibiting enhanced insulative and cushioning properties is produced from a blend of approximately equal parts of a thermoplastic elastomer and an ionomer foamed by a normally gaseous expanding agent.
    Type: Grant
    Filed: June 22, 1978
    Date of Patent: October 16, 1979
    Assignee: Tuxis Corporation
    Inventor: Herbert A. Ehrenfreund
  • Synthetic cork-like material and method of making same
    Patent number: 4091136
    Abstract: A synthetic cork-like material for use as a closure for liquid containers which is composed of a fine celled polyolefin foam containing an ionomer and which may be formed by a foaming process.
    Type: Grant
    Filed: May 17, 1976
    Date of Patent: May 23, 1978
    Assignee: Shaw Plastics Corporation
    Inventors: John C. O'Brien, Herbert A. Ehrenfreund