Patents by Inventor Haruyoshi Gotou

Haruyoshi Gotou 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: 5679834
    Abstract: A process for producing an acrylic acid ester or a methacrylic acid ester having a benzoic acid group from a benzoic acid derivative having a hydroxyalkyl group in the presence of an acid catalyst without using an azeotropic solvent with water having a strong toxicity and also without using acrylic acid chloride which has a strong tearing property, is hard to be handled and generates a by-product in the reaction. In the above process, the solvent for the benzoic acid derivative consists essentially of (meth)acrylic acid.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: October 21, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hideyuki Nishikawa, Haruyoshi Gotou
  • Patent number: 5055386
    Abstract: A silver halide color photographic material is disclosed, which material comprises a support and at least one silver halide photographic emulsion layer which contains a dispersion of fine lipophilic particles which particles are comprised of at least one type of oil solution non-color forming polymer and an oil soluble coupler which has been rendered fast to diffusion and which can form a dye by coupling with the oxidized form of a primary aromatic amine developing agent, wherein at least 20% by weight of said oil soluble non-color forming polymer has a molecular weight not more than 40,000.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: October 8, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tsumoru Hirano, Haruyoshi Gotou, Osamu Takahashi