Patents by Inventor Narihito Sekiguchi

Narihito Sekiguchi 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).

  • Offset printing ink
    Patent number: 8426499
    Abstract: An offset printing ink in which a modified pigment (D) is dispersed in a vehicle as a colorant, the modified pigment (D) contains a polymer (P) on the surface thereof, and the polymer (P) is obtained by polymerizing a resin or fat (B) which has a polymerizable unsaturated group, and is soluble in a nonaqueous solvent, and at least one of polymerizable unsaturated monomers (C) which are soluble in a nonaqueous solvent and insoluble or poorly-soluble after polymerization, and specifically, the resin or fat (B) is selected from the group consisting of acrylic resins having a polymerizable unsaturated group, alkyd resins which are soluble in the nonaqueous solvent, natural resin-modified phenol resins, and fats.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: April 23, 2013
    Assignee: DIC Corporation
    Inventors: Hiroshi Kinoshita, Narihito Sekiguchi, Yukie Suwa, Fumihiko Maekawa, Kosaku Nishiyama
  • OFFSET PRINTING INK
    Publication number: 20110015339
    Abstract: An offset printing ink in which a modified pigment (D) is dispersed in a vehicle as a colorant, the modified pigment (D) contains a polymer (P) on the surface thereof, and the polymer (P) is obtained by polymerizing a resin or fat (B) which has a polymerizable unsaturated group, and is soluble in a nonaqueous solvent, and at least one of polymerizable unsaturated monomers (C) which are soluble in a nonaqueous solvent and insoluble or poorly-soluble after polymerization, and specifically, the resin or fat (B) is selected from the group consisting of acrylic resins having a polymerizable unsaturated group, alkyd resins which are soluble in the nonaqueous solvent, natural resin-modified phenol resins, and fats.
    Type: Application
    Filed: March 23, 2009
    Publication date: January 20, 2011
    Inventors: Hiroshi Kinoshita, Narihito Sekiguchi, Yukie Suwa, Fumihiko Maekawa, Kosaku Nishiyama