Patents by Inventor Tugumoto Usui

Tugumoto Usui 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).

  • Silver halide color photographic material containing yellow coupler
    Patent number: 4356258
    Abstract: A photographic acylacetanilide yellow coupler having at the acyl or anilide portion thereof a moiety represented by --X--Y--Z where X represents --NHCO-- or --CONH-- radical, Y represents a divalent organic radical, Z represents ##STR1## wherein R.sub.1 is an alkyl or aryl radical, and a color photographic material containing an acylacetanilide yellow coupler.
    Type: Grant
    Filed: November 21, 1980
    Date of Patent: October 26, 1982
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Tugumoto Usui, Katsunori Kato, Tamotsu Kojima
  • Process for forming dye images
    Patent number: 4286053
    Abstract: Process for forming yellow dye images in silver halide photographic material using 2-equivalent .alpha.-pivaloyl acetanilide couplers having at the 5-position a ballasting sulfonyl amido group.
    Type: Grant
    Filed: November 21, 1979
    Date of Patent: August 25, 1981
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Wataru Ishikawa, Ryosuke Satoh, Kiyoshi Yamashita, Tugumoto Usui, Katsunori Kato
  • Process for forming a photographic magenta dye image
    Patent number: 4191574
    Abstract: A process for forming a photographic magenta dye image is disclosed which requires contacting exposed silver halide with a color developing agent in the presence of a particular class of 2-equivalent magenta couplers.
    Type: Grant
    Filed: August 2, 1978
    Date of Patent: March 4, 1980
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Takaya Endo, Shui Sato, Shoji Kikuchi, Tamotsu Kozima, Tugumoto Usui, Hiroyuki Imamura, Koichi Takabe
  • Method for the addition of photographic addenda
    Patent number: 4127413
    Abstract: A method for adding oil-soluble photographic addenda in the form of their solution in a high boiling organic solvent to a hydrophilic colloidal solution for forming a layer of a light-sensitive silver halide photographic material in the homogeneously dispersed state, is described.
    Type: Grant
    Filed: February 2, 1978
    Date of Patent: November 28, 1978
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masao Ishihara, Ryoichiro Kobayashi, Tugumoto Usui, Takayoshi Omura
  • Process for forming a photographic magenta dye image
    Patent number: 4126462
    Abstract: The present invention relates to a process for forming photographic images using a 2-equivalent magenta coupler position a radical of the following general formula:--O--SO.sub.2 --Rwhere R is an aliphatic hydrocarbon, aromatic hydrocarbon or heterocyclic residue.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: November 21, 1978
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Takaya Endo, Shui Sato, Shoji Kikuchi, Tamotsu Kozima, Tugumoto Usui, Hiroyuki Imamura, Koichi Takabe
  • Process for forming cyan dye photographic images
    Patent number: 4009035
    Abstract: A cyan coupler of the formula A -- NHCO(CF.sub.2 CF.sub.2).sub.n H wherein A is a phenolic or naphtholic cyan coupler residue and n is a positive integer of 1 to 7, incorporated in a light-sensitive silver halide photographic material produces a cyan dye photographic image which is favorable in light absorption characteristics and excellent in fastness when the coupler is developed with an aromatic primary amine type developing agent.
    Type: Grant
    Filed: January 22, 1975
    Date of Patent: February 22, 1977
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Tamotsu Kojima, Shui Sato, Takaya Endo, Tugumoto Usui, Tomio Horiuchi