Patents by Inventor Daniel E. Rodak

Daniel E. Rodak 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).

  • Shape memory epoxy polymers
    Patent number: 8618238
    Abstract: One embodiment includes compositions of shape memory epoxy polymers.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: December 31, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Tao Xie, Daniel E. Rodak, William R. Rodgers
  • Method for making super-hydrophilic and electrically conducting surfaces for fuel cell bipolar plates
    Patent number: 8603703
    Abstract: A method for embedding a hydrophilic and electrically conductive layer into a flow field plate or bipolar plate for a fuel cell. In one embodiment, the layer is niobium doped titanium oxide in a powder form. The method includes mixing the powder material in a suitable solution, such as a solvent. The solution is deposited on a substrate, such as a stainless steel substrate, by any suitable process, such as brushing. The substrate is then heated so that the solvent evaporates to leave a coating of the powder material. The substrate is then positioned in a die press and is stamped to the shape of the bipolar plate, where the stamping operation embeds the powder material into an outer surface of the bipolar plate.
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: December 10, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Daniel E. Rodak, Yang T. Cheng, Mei Cai, Martin S. Ruthkosky
  • Magnesium-titanium solid solution alloys
    Patent number: 7651732
    Abstract: Films of magnesium mixed with titanium are produced by non-equilibrium alloying processes such as electron beam evaporation of magnesium and titanium ingots in a very low pressure chamber. Such magnesium-titanium films form as single phase solid solutions. Titanium is inherently resistant to corrosion and its admixture with magnesium in solid solution provides a new composition that is less subject to intra-film galvanic corrosion. The magnesium-titanium films also provide relatively hard and strong coatings.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: January 26, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Yang T. Cheng, Mark W. Verbrugge, Michael P. Balogh, Daniel E. Rodak, Michael Lukitsch
  • MAGNESIUM-TITANIUM SOLID SOLUTION ALLOYS
    Publication number: 20090068357
    Abstract: Films of magnesium mixed with titanium are produced by non-equilibrium alloying processes such as electron beam evaporation of magnesium and titanium ingots in a very low pressure chamber. Such magnesium-titanium films form as single phase solid solutions. Titanium is inherently resistant to corrosion and its admixture with magnesium in solid solution provides a new composition that is less subject to intra-film galvanic corrosion. The magnesium-titanium films also provide relatively hard and strong coatings.
    Type: Application
    Filed: September 7, 2007
    Publication date: March 12, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Yang T. Cheng, Mark W. Verbrugge, Michael P. Balogh, Daniel E. Rodak, Michael Lukitsch
  • SHAPE MEMORY EPOXY POLYMERS
    Publication number: 20080262188
    Abstract: One embodiment includes compositions of shape memory epoxy polymers.
    Type: Application
    Filed: October 4, 2007
    Publication date: October 23, 2008
    Applicant: GM Global Technology Operations, Inc.
    Inventors: Tao Xie, Daniel E. Rodak, William R. Rodgers
  • Method For Making Super-Hydrophilic And Electrically Conducting Surfaces For Fuel Cell Bipolar Plates
    Publication number: 20080076004
    Abstract: A method for embedding a hydrophilic and electrically conductive layer into a flow field plate or bipolar plate for a fuel cell. In one embodiment, the layer is niobium doped titanium oxide in a powder form. The method includes mixing the powder material in a suitable solution, such as a solvent. The solution is deposited on a substrate, such as a stainless steel substrate, by any suitable process, such as brushing. The substrate is then heated so that the solvent evaporates to leave a coating of the powder material. The substrate is then positioned in a die press and is stamped to the shape of the bipolar plate, where the stamping operation embeds the powder material into an outer surface of the bipolar plate.
    Type: Application
    Filed: July 26, 2006
    Publication date: March 27, 2008
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Daniel E. Rodak, Yang T. Cheng, Mei Cai, Martin S. Ruthkosky