Patents by Inventor Paul A. Damrow

Paul A. Damrow 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).

  • Process for making a microporous membrane from a blend containing a poly(etheretherketone)-type polymer, an amorphous polymer, and a solvent
    Patent number: 5205968
    Abstract: The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(etheretherketone)-type polymer by forming a mixture of an unsulfonated poly(etheretherketone)-type polymer, an amorphous polymer, and a plasticizer, heating the resulting mixture, extruding or casting the mixture into a membrane, quenching or coagulating the membrane, and leaching the membrane, while optionally drawing the membrane before, during, and/or after leaching.
    Type: Grant
    Filed: December 28, 1990
    Date of Patent: April 27, 1993
    Assignee: The Dow Chemical Company
    Inventors: Paul A. Damrow, Robert D. Mahoney, H. Nelson Beck, Mark F. Sonnenschein
  • Elongated tubesheets for hollow fiber type battery cells
    Patent number: 4740338
    Abstract: Several advantages as to ease of cell fabrication, maximum cell size, fiber breakage, tubesheet tightness, resistance to tubesheet deformation in prolonged service, safety, etc., can be realized by using as the tubesheet in a hollow fiber type battery cell one which is elongated in shape, has a substantially smaller diameter than the fiber "bundle" depending from it and in which the fiber ends passing through it are closely packed.
    Type: Grant
    Filed: March 25, 1986
    Date of Patent: April 26, 1988
    Assignee: The Dow Chemical Company
    Inventors: Daniel O. Clark, Floris Y. Tsang, Paul A. Damrow
  • Elongated tubesheets for hollow fiber type battery cells and method of fabricating the same
    Patent number: 4664990
    Abstract: Several advantages as to ease of cell fabrication, maximum cell size, fiber breakage, tubesheet tightness, resistance to tubesheet deformation in prolonged service, safety, etc., can be realized by using as the tubesheet in a hollow fiber type battery cell one which is elongated in shape, has a substantially smaller diameter than the fiber "bundle" depending from it and in which the fiber ends passing through it are closely packed.
    Type: Grant
    Filed: March 25, 1986
    Date of Patent: May 12, 1987
    Assignee: The Dow Chemical Company
    Inventors: Daniel O. Clark, Floris Y. Tsang, Paul A. Damrow
  • Elongated tubesheets for hollow fiber type battery cells and method of fabricating the same
    Patent number: 4594289
    Abstract: Several advantages as to ease of cell fabrication, maximum cell size, fiber breakage, tubesheet tightness, resistance to tubesheet deformation in prolonged service, safety, etc., can be realized by using as the tubesheet in a hollow fiber type battery cell one which is elongated in shape, has a substantially smaller diameter than the fiber "bundle" depending from it and in which the fiber ends passing through it are closely packed.
    Type: Grant
    Filed: July 30, 1984
    Date of Patent: June 10, 1986
    Assignee: The Dow Chemical Company
    Inventors: Daniel O. Clark, Paul A. Damrow, Floris Y. Tsang
  • Method for molybdenum-coated aluminum current collector for alkali metal/sulfur battery cells
    Patent number: 4509254
    Abstract: Alkali metal/sulfur battery cells, in which the cathodic current collector is a shaped article comprising an aluminum substrate coated with molybdenum, have longer service lives if the molybdenum is overcoated with a layer of molybdenum oxides comprising an outer portion consisting of MoO.sub.3.
    Type: Grant
    Filed: March 5, 1984
    Date of Patent: April 9, 1985
    Assignee: The Dow Chemical Company
    Inventors: Paul A. Damrow, Floris Y. Tsang
  • Molybdenum-coated aluminum cathodes for alkali metal/sulfur battery cells
    Patent number: 4460662
    Abstract: Alkali metal/sulfur battery cells, in which the cathodic current collector is a shaped article comprising an aluminum substrate coated with molybdenum, have longer service lives if the molybdenum is overcoated with a layer of molybdenum oxides comprising an outer portion consisting of MoO.sub.3.
    Type: Grant
    Filed: May 13, 1983
    Date of Patent: July 17, 1984
    Assignee: The Dow Chemical Company
    Inventors: Paul A. Damrow, Floris Y. Tsang