Patents Represented by Attorney G. W. Rudman

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  • Non-aqueous primary battery having a bismuth (III) sulfide cathode
    Patent number: 4229509
    Abstract: A non-aqueous primary battery comprised of an electrolytic solution of a solvent and a solute, a separator, an anode, and a bismuth (III) sulfide cathode is provided. The electrochemical system of this invention is particularly useful in small primary batteries commonly referred to as "button cells" due to its high volumetric energy density and retention of cell dimensions.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: October 21, 1980
    Assignee: ESB Technology Company
    Inventor: Nehemiah Margalit
  • Process for sealing electrochemical cells
    Patent number: 4224736
    Abstract: A process for improving leakage resistant in a galvanic cell is provided. This is done by making an improved grommet and metal cover. The process comprises swelling a grommet which has been placed tightly around the periphery of a metal cover until the grommet is loose upon the metal cover, forcing a sealant solution between the swollen grommet and metal cover and then shrinking the grommet to substantially its original size to trap the sealant compound between the grommet and metal cover.
    Type: Grant
    Filed: August 7, 1978
    Date of Patent: September 30, 1980
    Assignee: ESB Inc.
    Inventor: Ralph H. Feldhake
  • Non-aqueous primary battery having a stannous sulfide cathode
    Patent number: 4223079
    Abstract: A non-aqueous primary battery comprised of an electrolytic solution of a solvent and a solute, a separator, an anode, and a stannous sulfide cathode is provided. The electrochemical system of this invention is particularly useful in small primary batteries commonly referred to as "button cells" due to its high volumetric energy density and retention of cell dimensions.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: September 16, 1980
    Assignee: ESB Technology Company
    Inventors: Nehemiah Margalit, Robert A. Maroney
  • Electrochemical battery employing a latex bonded lead dioxide electrode
    Patent number: 4215189
    Abstract: A lead dioxide electrode structure for an electrochemical battery is formed using a mixture of lead dioxide particles, carbon black particles, and a latex. The materials are mixed to form a compact and homogeneous electrode mixture. The mixture is then coated upon a conductive layer which is binded to a shim. This structure is useful as a cathode in an electrochemical primary battery of the reserve type.
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: July 29, 1980
    Assignee: ESB Inc.
    Inventors: Bernard C. Bergum, Alf M. Bredland, John W. Paulson
  • Material for an alkaline cell separator and a process of making
    Patent number: 4206275
    Abstract: A material useful as a separator in batteries and a process for making the material is provided. This material is a polyolefin having grafted to it side chains derived from an ethylenically unsaturated ionogenic monomer and cross-linked with sulfur.
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: June 3, 1980
    Assignee: ESB Incorporated
    Inventors: Philip Bernstein, James P. Coffey, Alan E. Varker
  • Additive for high drain rate lithium cells
    Patent number: 4195122
    Abstract: An improved high drain rate lithium cell is provided. The improvement is the use of an additive to stabilize the cell. The additive is a minor portion of alkali metal hexafluorophosphate.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: March 25, 1980
    Assignee: ESB Technology Company
    Inventors: Nehemiah Margalit, Philip E. Krouse
  • Non-aqueous primary battery having a pure silver chromate cathode
    Patent number: 4113929
    Abstract: A non-aqueous primary battery having an electrolytic solution consisting essentially of a non-aqueous solvent containing an electrolyte salt, a separator, a light metal anode and a pure silver chromate cathode is provided. The electrochemical system of this battery is particularly useful in small primary batteries commonly referred to as "button cells" due to its high volumetric energy density and retention of cell dimensions.
    Type: Grant
    Filed: November 14, 1977
    Date of Patent: September 12, 1978
    Assignee: ESB Incorporated
    Inventor: Nehemiah Margalit