Patents by Inventor Takashi Kozuchi

Takashi Kozuchi 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).

  • Oil-based ink composition for ink jet recording and method for inspecting it
    Patent number: 7886581
    Abstract: The invention provides an oil-based ink composition for ink jet recording, which is best suited for printing onto polyvinyl chloride substrates, and improved in terms of both the stabilities of ink on storage and jetting, and a method for inspecting the same. The oil-based ink composition for ink jet recording comprises as a main solvent at least a specific polyalkylene glycol dialkyl ether and containing at least a specific quinacridone pigment component. That composition should be such that when a measuring sample comprising it is analyzed by means of high speed liquid chromatography under specific measuring conditions, the concentration of a component having a peak at the holding time of 10.3 minutes is 0.4 ppm or less.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: February 15, 2011
    Assignees: Seiko Epson Corporation, The Inctec Inc.
    Inventors: Takashi Kozuchi, Kazuhiko Hara, Yukio Sugita, Mitsuyoshi Tamura, Fumie Yamazaki, Mitsuteru Yamada
  • Oil-Based Ink Composition for Ink Jet Recording and Method for Inspecting It
    Publication number: 20110034596
    Abstract: The invention provides an oil-based ink composition for ink jet recording, which is best suited for printing onto polyvinyl chloride substrates, and improved in terms of both the stabilities of ink on storage and jetting, and a method for inspecting the same. The oil-based ink composition for ink jet recording comprises as a main solvent at least a specific polyalkylene glycol dialkyl ether and containing at least a specific quinacridone pigment component. That composition should be such that when a measuring sample comprising it is analyzed by means of high speed liquid chromatography under specific measuring conditions, the concentration of a component having a peak at the holding time of 10.3 minutes is 0.4 ppm or less.
    Type: Application
    Filed: October 25, 2010
    Publication date: February 10, 2011
    Applicants: SEIKO EPSON CORPORATION, THE INCTEC INC.
    Inventors: Takashi KOZUCHI, Kazuhiko HARA, Yukio SUGITA, Mitsuyoshi TAMURA, Fumie YAMAZAKI, Mitsuteru YAMADA
  • Oil-Based Ink Composition For Ink Jet Recording And Method For Inspecting It
    Publication number: 20090030121
    Abstract: The invention provides an oil-based ink composition for ink jet recording, which is best suited for printing onto polyvinyl chloride substrates, and improved in terms of both the stabilities of ink on storage and jetting, and a method for inspecting the same. The oil-based ink composition for ink jet recording comprises as a main solvent at least a specific polyalkylene glycol dialkyl ether and containing at least a specific quinacridone pigment component. That composition should be such that when a measuring sample comprising it is analyzed by means of high speed liquid chromatography under specific measuring conditions, the concentration of a component having a peak at the holding time of 10.3 minutes is 0.4 ppm or less.
    Type: Application
    Filed: October 16, 2007
    Publication date: January 29, 2009
    Applicants: SEIKO EPSON CORPORATION, THE INCTEC INC.
    Inventors: Takashi Kozuchi, Kazuhiko Hara, Yukio Sugita, Mitsuyoshi Tamura, Fumie Yamazaki, Mitsuteru Yamada