Patents by Inventor Munetaka Kakiuchi

Munetaka Kakiuchi 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).

  • Pigment-dispersed aqueous recording liquid and printed material
    Patent number: 7348368
    Abstract: A pigment-dispersed aqueous recording liquid containing at least a pigment and a resin, which comprises from 60 to 200 parts by weight of the resin to 100 parts by weight of the pigment, wherein at least one of the resin is a water-dispersible urethane type resin, a weight fraction of a polyurethane urea part of which is at most 2.0 wt % to the urethane resin, and the pigment dispersed in the recording liquid has a dispersion particle size D50 of from 40 to 100 nm.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: March 25, 2008
    Assignees: Mitsubishi Chemical Corporation, Seiko Epson Corporation, Mikuni Shikiso Kabushiki Kaisha
    Inventors: Munetaka Kakiuchi, Shuichi Kataoka, Takashi Oyanagi, Kimihiko Ohya, Seiji Kamamasu
  • Carbon black and recording liquid using the same
    Patent number: 7214263
    Abstract: A recording liquid which gives a printed matter having a high blackness, reduced blurring, satisfactory printed-image quality, and satisfactory print fastness of a record such as light resistance and water resistance, and which has a low viscosity, satisfactory suitability for ejection, and excellent storage stability is provided. A carbon black has the following features (a) to (c): (a) to have a 24M4 DBP absorption of 100 cm3/100 g or higher, (b) to have a D75 larger than 45 nm and smaller than 120 nm, and (c) to have a TINT exceeding 110%. The recording liquid contains the carbon black.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: May 8, 2007
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Munetaka Kakiuchi, Shinichi Kanamaru
  • Carbon black and recording liquid using the same
    Publication number: 20060234057
    Abstract: A recording liquid which gives a printed matter having a high blackness, reduced blurring, satisfactory printed-image quality, and satisfactory print fastness of a record such as light resistance and water resistance, and which has a low viscosity, satisfactory suitability for ejection, and excellent storage stability is provided. A carbon black has the following features (a) to (c): (a) to have a 24M4 DBP absorption of 100 cm3/100 g or higher, (b) to have a D75 larger than 45 nm and smaller than 120 nm, and (c) to have a TINT exceeding 110%. The recording liquid contains the carbon black.
    Type: Application
    Filed: March 27, 2006
    Publication date: October 19, 2006
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Munetaka Kakiuchi, Shinichi Kanamaru
  • Pigment-dispersed aqueous recording liquid and printed material
    Publication number: 20040229976
    Abstract: A pigment-dispersed aqueous recording liquid containing at least a pigment and a resin, which comprises from 60 to 200 parts by weight of the resin to 100 parts by weight of the pigment, wherein at least one of the resin is a water-dispersible urethane type resin, a weight fraction of a polyurethane urea part of which is at most 2.0 wt % to the urethane resin, and the pigment dispersed in the recording liquid has a dispersion particle size D50 of from 40 to 100 nm.
    Type: Application
    Filed: March 3, 2004
    Publication date: November 18, 2004
    Applicants: Seiko Epson Corporation, Mitsubishi Chemical Corporation, MIKUNI SHIKISO KABUSHIKI KAISHA
    Inventors: Munetaka Kakiuchi, Shuichi Kataoka, Takashi Oyanagi, Kimihiko Ohya, Seiji Kamamasu