Patents by Inventor Satomi Kawasaki

Satomi Kawasaki 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).

  • Photo-decoloring dye, a binder resin composition containing the same and photo-recording material
    Patent number: 6124078
    Abstract: A photo-decoloring dye represented by the following Formula (1), ##STR1## wherein Z.sub.1, Z.sub.2 and Z.sub.3 each represents a carbon atom or a nitrogen atom, R.sub.1, R.sub.2 and R.sub.3 each represents a hydrogen atom and substituents, Z.sub.2 and Z.sub.3 may form a condensed ring, Z represents N or CH, X+ represents an organic cation, m represents an integer of 0 to 4, n represents an integer of 0 to 3.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: September 26, 2000
    Assignee: Konica Corporation
    Inventors: Noritaka Nakayama, Satomi Kawasaki
  • Solid processing compositions for light-sensitive silver halide photographic materials
    Patent number: 5376509
    Abstract: A processing chemical for light-sensitive silver halide photographic material, comprising a cyclodextrin compound, which can contribute a decrease in packaging materials, transportation cost and storage space, can be free from lateral cracking at the formation of tablets, and can bring about an improvement in storage stability after being formed into processing solutions (i.e., more free from occurrence of stain during developing and scratches in light-sensitive materials having been processed, caused by deposition of crystals).
    Type: Grant
    Filed: November 27, 1992
    Date of Patent: December 27, 1994
    Assignee: Konica Corporation
    Inventors: Hiroshi Yoshimoto, Shoji Nishio, Hideki Komatsu, Satomi Kawasaki
  • Black-and-white silver halide photographic light-sensitive material and a method for processing the same
    Patent number: 5352563
    Abstract: A silver halide photographic light-sensitive material is disclosed, which comprises a support and provided thereon, a silver halide photographic emulsion layer and a protective layer in that order, wherein at least one layer of said emulsion layer and said protective layer contains a cyclodextrin compound and said emulsion layer contains a hydrazine derivative or a compound represented by the following formula (T): ##STR1##
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: October 4, 1994
    Assignee: Konica Corporation
    Inventors: Satomi Kawasaki, Shyouji Nishio, Hideki Komatsu