Patents by Inventor Kathrine J. Lewis

Kathrine J. Lewis 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: 6059867
    Abstract: A non-chromate, corrosion-inhibiting coating composition for metal surfaces includes at least one inhibitor selected from the group consisting of phosphates, phosphosilicates, silicates, and mixtures thereof, at least one inhibitor selected from the group consisting of titanates, zinc salts, and mixtures thereof, and a carrier for these inhibitors, the carrier capable of placing the inhibitors in proximity with the metal surface. In a preferred embodiment, the coating composition further includes a borate such as boric acid, and a succinate. A preferred phosphate includes calcium dihydrogen phosphate, and sodium titanium oxide is a preferred titanate. The zinc salt can include zinc phosphate or zinc cyanamide.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: May 9, 2000
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Kathrine J. Lewis, Jak Aklian
  • Patent number: 5951747
    Abstract: A non-chromate, corrosion-inhibiting coating composition for metal surfaces includes at least one inhibitor selected from the group consisting of phosphates, phosphosilicates, silicates, and mixtures thereof, at least one inhibitor selected from the group consisting of titanates, zinc salts, and mixtures thereof, and a carrier for these inhibitors, the carrier capable of placing the inhibitors in proximity with the metal surface. In a preferred embodiment, the coating composition further includes a borate such as boric acid, and a succinate. A preferred phosphate includes calcium dihydrogen phosphate, and sodium titanium oxide is a preferred titanate. The zinc salt can include zinc phosphate or zinc cyanamide.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: September 14, 1999
    Assignee: Courtaulds Aerospace
    Inventors: Kathrine J. Lewis, Jak Aklian
  • Patent number: 5521012
    Abstract: There is disclosed herein a storage-stable, water-borne, zinc-containing coating. The coating inhibits corrosion of steel and other ferrous or metal materials more noble than zinc. The coating composition includes an aqueous polymer composition, a temporary zinc-inhibitor or combinations thereof, and zinc powder. There is also disclosed a method of making an anti-corrosion coating, as well as a method of coating a metal material.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: May 28, 1996
    Assignee: Courtaulds Coatings
    Inventors: Jak Aklian, Stacy A. B. Evans, Michael Hickling, Kathrine J. Lewis
  • Patent number: 4499658
    Abstract: A method for forming photovoltaic cell module laminates wherein the cells are sealed in a crosslinked polymer between a solid superstrate and a solid substrate wherein the polymer is formed from ethylene/vinylacetate copolymer having dispersed therein at least one peroxide initiator to crosslink the polymer and at least one organosilane primer to promote bonding of the ethylene/vinylacetate to the superstrate and substrate, the initiator being present in an amount of no more than 1 weight percent based on the total weight of the copolymer and the primer being present in an amount of no more than 0.5 weight percent based on the total weight of the copolymer and subjecting the thus formed laminate to an elevated temperature for a time sufficient to crosslink the copolymer and seal the photovoltaic cells in the crosslinked copolymer while at the same time binding the crosslinked ethylene/vinylacetate copolymer to both the substrate and superstrate.
    Type: Grant
    Filed: September 6, 1983
    Date of Patent: February 19, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Kathrine J. Lewis
  • Patent number: 4104520
    Abstract: An electrostatic imaging chamber providing a real time visual image. An imaging chamber with electrophoretic particles in the electrode gap, with the particles being selectively moved to a transparent electrode as a result of the electrostatic charge image formed by incoming radiation. An imaging chamber which can be cyclicly operated at a relatively high repetition rate, typically 10 to 20 images per second, thereby providing real time viewing of the object. A conductivity control layer at the gap for discharging the electrostatic charge image each cycle after viewing.
    Type: Grant
    Filed: May 24, 1977
    Date of Patent: August 1, 1978
    Assignee: Xonics, Inc.
    Inventors: John H. Lewis, Kathrine J. Lewis, Fremont Reizman, Murray S. Welkowsky