Patents by Inventor Akio Ishizuka

Akio Ishizuka 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).

  • Process for the preparation of radiographic intensifying screen
    Patent number: 4455323
    Abstract: A process for the preparation of a radiographic intensifying screen comprising a support and a phosphor layer, which comprises:preparing a coating dispersion containing phosphor particles, a particulate hydrophobic silica in an amount of not more than 2% by weight of the phosphor particles, and a binder; andapplying the coating dispersion onto the support to form a phosphor layer.
    Type: Grant
    Filed: June 21, 1983
    Date of Patent: June 19, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akio Ishizuka, Akira Kitada
  • Color image forming system including a layer formed from a dried residue of a developing ink containing a polyester resin binder
    Patent number: 4138522
    Abstract: A developing ink comprising a developer, a polyester resin binder and a liquid medium. The polyester resin binder is a thermoplastic linear polymeric compound having preferably a molecular weight of about 5,000 to 50,000 and a melting point of about 90 to 170.degree. C.
    Type: Grant
    Filed: December 9, 1976
    Date of Patent: February 6, 1979
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akio Ishizuka, Akio Miyamoto
  • Recording sheet
    Patent number: 4039207
    Abstract: A recording sheet comprising a support having thereon a microcapsule layer containing a color former and wherein the support or microcapsule layer contains a desensitizing agent.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: August 2, 1977
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Akio Ishizuka
  • Process for separating a number of sheets into groups
    Patent number: 3970500
    Abstract: A process for separating a number of sheets into groups of sheets comprising coating an adhesive composition on an edge of a stack of the sheets and fanning the sheets. The adhesive composition contains a naphthalene sulfonic acid-formaldehyde condensation product and an organic acid or an alkali metal salt thereof.
    Type: Grant
    Filed: December 11, 1974
    Date of Patent: July 20, 1976
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akio Ishizuka, Yasuhiro Ogata
  • Diffusion transfer image receptive materials
    Patent number: 3969541
    Abstract: A diffusion transfer image-receptive sheet comprising (a) a sheet of an alkali impermeable polymer having a surface portion converted into an alkali permeable state and (b) diffusion transfer nuclei incorporated in the alkali permeable surface portion.
    Type: Grant
    Filed: March 27, 1972
    Date of Patent: July 13, 1976
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshito Mukaida, Eiichi Mizuki, Tomoaki Ikeda, Masayoshi Tsuboi, Akio Ishizuka, Fumiaki Shinozaki