Patents by Inventor Steven L. Johnson

Steven L. Johnson 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).

  • Patent number: 4853305
    Abstract: A polymer bonded sheet product suitable for use as a cathodic electrode in a non-aqueous battery system wherein the cathodic electrode is a microporous sheet composed of from 2-30 weight percent polyethylene, 70-98 weight percent of electrically conductive and electrochemically active particulate material and from 0 to 5 weight percent of a plasticizer for the polyethylene.
    Type: Grant
    Filed: August 14, 1987
    Date of Patent: August 1, 1989
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Menahem Anderman, Steven L. Johnson
  • Patent number: 4735875
    Abstract: A polymer bonded sheet product suitable for use as a cathodic electrode in a non-aqueous battery system wherein the cathodic electrode is a microporous sheet composed of from 2-30 weight percent polyethylene, 70-98 weight percent of electrically conductive and electrochemically active particulate material and from 0 to 5 weight percent of a plasticizer for the polyethylene.
    Type: Grant
    Filed: March 24, 1986
    Date of Patent: April 5, 1988
    Assignee: W. R. Grace & Co.
    Inventors: Menahem Anderman, Steven L. Johnson
  • Patent number: 4669242
    Abstract: A method of lining the hot face of the wall of a heated enclosure, such as a furnace, boiler or the like, comprising the steps of compressing a plurality of substantially cylindrical modules of ceramic fiber material inwardly from the perimeter thereof; attaching the individual, compressed modules to the hot face of the wall in predetermined relationship whereby to define certain openings therebetween, inspecting the attaching means by virtue of the access thereto provided by the openings; filling the openings with a plug of ceramic fiber material; and then releasing the compression upon the modules to permit radial expansion thereof in all directions whereby to create a lining over the entire wall.
    Type: Grant
    Filed: August 1, 1984
    Date of Patent: June 2, 1987
    Assignee: Geo. P. Reintjes Co., Inc.
    Inventors: Steven L. Johnson, Martin E. Adams, James P. Leffingwell, John J. Musser, William H. Hedges, Thomas L. Robberts
  • Patent number: 4448607
    Abstract: Crude phthalocyanine is converted from its crude state to its pigmentary form by (1) milling it with a phthalimidomethyl phthalocyanine derivative or a sulfonated phthalimidomethyl phthalocyanine derivative in the absence of any milling or grinding aid or by (2) grinding the crude phthalocyanine in the absence of any milling or grinding aid and then blending the ground material with a phthalimidomethyl phthalocyanine derivative or a sulfonated phthalimidomethyl phthalocyanine derivative. Without any additional conditioning or purification the pigment product is suitable for use in printing inks, paints, coating compositions, and the like.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: May 15, 1984
    Assignee: Sun Chemical Corporation
    Inventors: Steven L. Johnson, George McLaren, George H. Robertson