Patents Examined by A. Walker
  • Copolymer of vinyl pyrrolidone and a C.sub.30 alpha-olefin in flake or powder form, process for making same, and personal care compositions therewith
    Patent number: 5171807
    Abstract: Ganex.RTM. copolymers in the physical form of flakes or powders is provided herein by a novel process, and used in a personal care composition.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: December 15, 1992
    Assignee: ISP Investments Inc.
    Inventor: Stephen L. Kopolow
  • High refractive index polymers
    Patent number: 5132430
    Abstract: Ethylenically unsaturated polymerizable acrylic (or methacrylic) monomers having pendant halogenated carbazole moieties, useful for the production of high refractive index polymers, are disclosed. The monomers are useful for the bonding of optical elements in the fabrication of optical devices.
    Type: Grant
    Filed: June 26, 1991
    Date of Patent: July 21, 1992
    Assignee: Polaroid Corporation
    Inventors: Russell A. Gaudiana, Richard A. Minns, Howard G. Rogers
  • Photochromic compound
    Patent number: 4929693
    Abstract: A novel photochromic compound and a polymer comprising the photochromic compound are disclosed. The novel photochromic compound of the present invention is a spirooxazine compound having an addition polymerizable organic functional group or a ring-opening polymerizable organic functional group therein.
    Type: Grant
    Filed: February 2, 1988
    Date of Patent: May 29, 1990
    Assignee: Toray Industries, Inc.
    Inventors: Ryojiro Akashi, Takashi Taniguchi