Patents by Inventor Kazuyuki Shinmitsu

Kazuyuki Shinmitsu 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).

  • Pressure sensitive recording sheet with a layer containing microcapsules each containing color former and benzyl toluene
    Patent number: 5242885
    Abstract: An improved pressure sensitive recording sheet capable of causing an improved color development which comprises a substrate and a layer containing microcapsules each containing an electron-donative chromogenic material and a hydrophobic medium containing benzyl toluene being formed on the substrate.The pressure sensitive recording sheet exhibits an excellent color-developing property and provides clear color images of high density.
    Type: Grant
    Filed: May 5, 1992
    Date of Patent: September 7, 1993
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Kazuyuki Shinmitsu, Masanao Tajiri, Shunsuke Shioi
  • Microcapsule-containing ink composition for flexographic printing
    Patent number: 5120360
    Abstract: A microcapsule-containing ink composition for flexographic printing containing microcapsules, an adhesive and an ink medium, the composition being characterized in that the adhesive includes a polymer composed of a methacrylate or acrylate singly or as its main component and having an average molecular weight of 3000 to 50,000.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: June 9, 1992
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Masanao Tajiri, Kazuyoshi Wakata, Kazuyuki Shinmitsu, Shunsuke Shioi
  • Ink composition containing microcapsules
    Patent number: 4936916
    Abstract: A non-aqueous printing ink composition containing a microcapsule and a microencapsulated ink composition characterized in that the microcapsule has a capsule wall comprising melamine-formaldehyde resin and has an average particle size of 1.8 to 3.5.mu..
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: June 26, 1990
    Assignee: Kanszaki Paper Manufacturing Co. Ltd.
    Inventors: Kazuyuki Shinmitsu, Shunsuke Shioi, Makoto Miyake
  • Process for preparing microcapsules
    Patent number: 4753968
    Abstract: In a microencapsulation process which comprises polycondensating a hydrophilic melamine-formaldehyde resin type precondensate in water or in a hydrophilic medium containing an emulsifier to form capsule wall film around a hydrophobic core material to obtain microcapsules, the process which is characterized in that the emulsifier is a copolymer of (1) an unsaturated monobasic acid monomer of at least 80 mole %, (2) a hydrophobic monomer and (3) a hydrophilic monomer other than a carboxylic acid.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: June 28, 1988
    Assignee: Kanzaki Paper Manufacturing Co. Ltd.
    Inventors: Shunsuke Shioi, Kazuyuki Shinmitsu, Masanao Tajiri, Makoto Miyake
  • Pressure sensitive manifold sheet
    Patent number: 4704379
    Abstract: A pressure sensitive manifold sheet characterized in that a chelate record material comprising an iron (III) compound and/or a vanadium compound, and an aromatic compound having at least one of hydroxyl group and mercapto group on the aromatic ring in combination therewith is used further in combination with an infrared absorbing organic compound.
    Type: Grant
    Filed: March 3, 1986
    Date of Patent: November 3, 1987
    Assignee: Kanzaki Paper Manufacturing Co. Ltd.
    Inventors: Shunsuke Shioi, Kazuyuki Shinmitsu, Nobuo Kanda, Mitsuru Kondo, Makoto Miyake