Patents by Inventor Sadao Tamura

Sadao Tamura 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).

  • Multiple-color recording apparatus
    Patent number: 4433338
    Abstract: A multiple color recording apparatus records on a sheet of recording paper, the magnitudes of a plurality of varying analog signals as a pattern of dots in different colors, and also records characters, symbols and the like related to the analog recording as a pattern of dots in desired colors.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: February 21, 1984
    Assignee: Yokogawa Hokushin Electric Corporation
    Inventors: Shuichi Nakagawa, Sadao Tamura, Setsuo Satoh, Mamoru Sanagi, Hirosho Otsu, Shigenobu Miyamoto, Hiroyuki Takahashi
  • Water-soluble coating composition for ship bottoms
    Patent number: 4129610
    Abstract: A water-soluble coating composition for ship bottom comprising(A) 70 - 95 parts by weight of a vinyl copolymer of(a) 5 - 40% by weight of monoethylenic unsaturated monomer having at least one basic nitrogen atom,(b) 5 - 40% by weight of monoethylenic unsaturated monomer having at least one amide group, and(c) at least one monoethylenic unsaturated monomer copolymerizable with the said components (a) and (b), a total of the components (a), (b) and (c) being 100% by weight, and(B) 30 - 5 parts by weight of a water-soluble epoxy compound, shows excellent effect on controlling release rate of the toxic material from the primer coating layer and on inhibiting adhesion of marine organisms to ship bottoms, when applied to the primer coating layer of ship bottoms.
    Type: Grant
    Filed: October 22, 1976
    Date of Patent: December 12, 1978
    Assignees: Hitachi Chemical Co., Ltd., Chugoku Marine Paints, Ltd.
    Inventors: Kengo Kobayashi, Masayuki Mogami, Shigeyoshi Tanaka, Manabu Nakao, Sadao Tamura