Patents by Inventor Gunnar Reitmajer

Gunnar Reitmajer 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).

  • Moulding composition for producing bipolar plates
    Patent number: 7695806
    Abstract: Compositions comprising (a) an epoxy resin, (b) a hardener for the epoxy resin, (c) a product of the reaction of a microgel containing carboxylic acid groups and a nitrogen-containing base, and (d) an electrically conducting filler combination comprising, based on the total amount of filler, at least 75% by weight of graphite, are particularly suitable for producing biopolar plates.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: April 13, 2010
    Assignee: Duresco GmbH
    Inventors: Martin Spitzer, Philip David Willis, Gunnar Reitmajer
  • Moulding composition for producing bipolar plates
    Publication number: 20070185244
    Abstract: Compositions comprising (a) an epoxy resin, (b) a hardener for the epoxy resin, (c) a product of the reaction of a microgel containing carboxylic acid groups and a nitrogen-containing base, and (d) an electrically conducting filler combination comprising, based on the total amount of filler, at least 75% by weight of graphite, are particularly suitable for producing biopolar plates.
    Type: Application
    Filed: February 26, 2007
    Publication date: August 9, 2007
    Inventors: Martin Spitzer, Philip Willis, Gunnar Reitmajer
  • Moulding composition for producing bipolar plates
    Publication number: 20040147643
    Abstract: Compositions comprising (a) an epoxy resin, (b) a hardener for the epoxy resin, (c) a product of the reaction of a microgel containing carboxylic acid groups and a nitrogen-containing base, and (d) an electrically conducting filler combination comprising, based on the total amount of filler, at least 75% by weight of graphite, are particularly suitable for producing bipolar plates.
    Type: Application
    Filed: November 14, 2003
    Publication date: July 29, 2004
    Inventors: Martin Spitzer, Philip David Willis, Gunnar Reitmajer
  • Epoxy resin compositions having a long shelf life
    Patent number: 6562884
    Abstract: A composition comprising (a) an epoxy resin having, on average, more than one 1,2-epoxy group per molecule, (b) a polyol as epoxy resin curing agent and (c) a solid microgel-amine adduct as accelerator has high latency, good storage stability and a wide processing window.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: May 13, 2003
    Assignee: Vantico, Inc.
    Inventors: Qian Tang, Gunnar Reitmajer, Martin Roth, Martin Spitzer, Philip David Willis