Patents Assigned to Kazuhiko Ishihara
  • Patent number: 8318865
    Abstract: The present invention is a method of manufacturing an eye lens material having a process in which a phosphorylcholine group-containing chemical compound represented by the following formula (1) is reacted and covalently bonded to the surface of an eye lens material having hydroxyl groups wherein the chemical compound represented by the following formula (2) is reacted and covalently bonded through ester-bonding to the eye lens material in an organic solvent. The object of the present invention is to provide an eye lens material that prevents protein adsorption and a method of manufacturing thereof.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: November 27, 2012
    Assignees: Shiseido Company, Ltd., Kazuhiko Ishihara
    Inventors: Yukimitsu Suda, Kazuyuki Miyazawa, Kazuhiko Ishihara
  • Patent number: 7323224
    Abstract: A method for discharging a liquid containing a biological material includes adding as a dispense stabilizer a polymer composed of phosphorylcholine-group-containing unsaturated compound units or a copolymer including same to the liquid containing the biological material; and discharging the liquid containing the dispense stabilizer using an inkjet system.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: January 29, 2008
    Assignees: Seiko Epson Corporation, Kazuhiko Ishihara
    Inventors: Fumio Takagi, Kazuhiko Ishihara
  • Publication number: 20060217276
    Abstract: Contact lens wetting solutions for reducing friction between the contact lens and ocular tissues, and maintaining such effect for a long time, are disclosed. The wetting solution is composed only of a particular ratio of a lubricant composed of copolymer (A) obtained by polymerizing a monomer composition comprising 2-(meth)acryloyloxyethyl phosphorylcholine and alkyl(meth)acrylate, a buffer, an inorganic chloride, a preservative, a chelating agent, and water. The copolymer (A) has a weight average molecular weight of 100,000 to 1,000,000, and satisfies the formula 80?N×R?240, provided that 4?N?18 and 10%?R?60%, wherein N stands for the carbon number of the alkyl group in monomer Y constituting copolymer (A), and R stands for a molar fraction of the unit derived from monomer Y with respect to the sum of the units derived from monomers X and Y.
    Type: Application
    Filed: June 8, 2006
    Publication date: September 28, 2006
    Applicants: NOF Corporation, Nobuo Nakabayashi, Kazuhiko Ishihara
    Inventors: Motohiro Mitani, Ryota Ando, Hirofumi Irie, Ken Suzuki, Nobuo Nakabayashi, Kazuhiko Ishihara