Patents by Inventor Sadayoshi Kamiya

Sadayoshi Kamiya 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).

  • High-viscosity eye lotions
    Patent number: 4230690
    Abstract: The invention presents a high-viscosity eye lotion with which lasting curve effects can be obtained with no feeling of foreign bodies to the eye as in the conventional eye salves used in treating eyes.The high-viscosity eye lotion of the invention comprises a swollen hydrated gel of a crosslinked polyvinyl alcohol and an eye-disease curative active ingredient contained therein. It is prepared by irradiating an aqueous solution of a polyvinyl alcohol with an ionizing radiation to such an extent that the polyvinyl alcohol is crosslinked to give a hydrated gel with an equilibrium swelling ratio in the range from 70 to 100 by weight and then dipping the hydrated gel in an aqueous solution of the eye-disease curative active agent.
    Type: Grant
    Filed: April 26, 1979
    Date of Patent: October 28, 1980
    Assignees: Director-General of the Agency of Industrial Science and Technology, Nihon, Tenganyaku Kenkyusho K.K.
    Inventors: Aizo Yamauchi, Yasuo Matsuzawa, Sadayoshi Kamiya, Keisuke Nishioka, Yoshiaki Hara, Shogo Matsushima
  • Dextran-alkyl methacrylate graft composition for contact lens and corneas
    Patent number: 3989656
    Abstract: A dextran-alkyl methacrylate graft composition consisting essentially of a dextran unit of the formula (1) ##SPC1##Wherein n is an integer of 5 to 150,000, and a poly(alkyl methacrylate) unit of the formula (2) ##EQU1## WHEREIN M IS AN INTEGER OF 50 TO 200,000 AND R is an alkyl group having 1 to 4 carbon atoms,And a process for producing the same.
    Type: Grant
    Filed: January 6, 1975
    Date of Patent: November 2, 1976
    Assignee: Karme Company Ltd.
    Inventors: Sadayoshi Kamiya, Tokihiko Yamamoto, Yasuhiko Onishi, Shusaburo Hokkoku