Patents by Inventor Mark T. Kirsch

Mark T. Kirsch 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).

  • Filter elements having injection molded thermoplastic seals and methods of making same
    Patent number: 7341613
    Abstract: Seals for filter elements having filter packs with seals around the periphery thereof adjacent to one of the faces are produced by injection molding the seal onto the filter pack using an ethylene-propyleneterpolymer (EPDM) thermoplastic material. Preferably, the thermoplastic material is embedded in polypropylene particles. The resulting seal has a contact portion which bends and/or compresses upon being engaged by a lid of a filter housing as the lid closes.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: March 11, 2008
    Assignee: Wix Filtration Corp LLC
    Inventor: Mark T. Kirsch
  • Filter elements having injection molded thermoplastic seals and methods of making same
    Patent number: 7300486
    Abstract: Seals for filter elements having filter packs with seals around the periphery thereof adjacent to one of the faces are produced by injection molding the seal onto the filter pack using a cell-less thermoplastic material. Preferably, the thermoplastic material is comprised of thermoplastic particles embedded in ethylene-propyleneterpolymer (EPDM). The resulting seal has a contact portion which bends rather than compresses upon a lid of a housing containing the filter element closing.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: November 27, 2007
    Assignee: Wix Filtration Corp LLC
    Inventor: Mark T. Kirsch
  • Filter elements having injection molded thermoplastic seals and methods of making same
    Publication number: 20040194441
    Abstract: Seals for filter elements having filter packs with seals around the periphery thereof adjacent to one of the faces are produced by injection molding the seal onto the filter pack using an ethylene-propyleneterpolymer (EPDM) thermoplastic material. Preferably, the thermoplastic material is embedded in polypropylene particles. The resulting seal has a contact portion which bends and/or compresses upon being engaged by a lid of a filter housing as the lid closes.
    Type: Application
    Filed: January 23, 2004
    Publication date: October 7, 2004
    Inventor: Mark T. Kirsch