Patents by Inventor Yoshimi Yatsuyanagi

Yoshimi Yatsuyanagi 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).

  • Reactive microgel and photosensitive resin composition containing the reactive microgel for flexographic printing plate
    Patent number: 5547999
    Abstract: A reactive microgel suitable for a photosensitive resin composition for a water-developable flexographic printing plate, which has an average particle diameter to 10 .mu.m, and is formed ofmicrogel particles, as a core, synthesized from an acrylic monomer in an aqueous medium in the presence of an oil-soluble initiator and in the presence of a reactive polymer emulsifier which is an adduct of a neutralized product of an acrylic copolymer having a tertiary amino group with a compound having an epoxy group and an .alpha., .beta.-unsaturated double bond, and a nonionic emulsifier having an HLB of 12 to 16, anda compound having an epoxy group and an .alpha., .beta.-unsaturated double bond, attached to surfaces of the microgel particles.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: August 20, 1996
    Assignee: Toyolink Manufacturing Co., Ltd.
    Inventors: Sunao Satake, Yoshimi Yatsuyanagi, Masahiro Fujii, Ippei Imagawa
  • Reactive microgel and photosensitive resin composition containing the reactive microgel for flexographic printing plate
    Patent number: 5545694
    Abstract: A reactive microgel suitable for a photosensitive resin composition for a water-developable flexographic printing plate, which has an average particle diameter of 1 to 10 .mu.m, and is formed ofmicrogel particles, as a core, synthesized from an acrylic monomer in an aqueous medium in the presence of an oil-soluble initiator and in the presence of a reactive polymer emulsifier which is an adduct of a neutralized product of an acrylic copolymer having a tertiary amino group with a compound having an epoxy group and an .alpha.,.beta.-unsaturated double bond, and a nonionic emulsifier having an HLB of 12 to 16, anda compound having an epoxy group and an .alpha.,.beta.-unsaturated double bond, attached to surfaces of the microgel particles.
    Type: Grant
    Filed: February 9, 1995
    Date of Patent: August 13, 1996
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Sunao Satake, Yoshimi Yatsuyanagi, Masahiro Fujii, Ippei Imagawa
  • Photosensitive resin composition and process for the production thereof, and virgin flexographic printing plate
    Patent number: 5362604
    Abstract: A photosensitive resin composition suitable for producing a virgin flexographic printing plate, a process for the production thereof and a virgin flexographic printing plate. The photosensitive resin composition comprises (1) a photosensitive microgel obtained by emulsion-polymerizing (a) a compound having an .alpha., .beta.-ethylenically unsaturated double bond in the presence, as an emulsifier, of (b) a compound containing a tertiary ammonium salt to prepare (A) fine microgel particles and reacting the (A) fine microgel particles with (B) a compound having an epoxy group to react with the tertiary ammonium salt and at least one .alpha., .beta.-ethylenically unsaturated double bond per molecule, (2) a compound having an .alpha., .beta.-ethylenically unsaturated double bond, and (3) a rubber or thermoplastic elastomer.
    Type: Grant
    Filed: February 2, 1993
    Date of Patent: November 8, 1994
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventor: Yoshimi Yatsuyanagi