Patents by Inventor Tetsuro Oizumi

Tetsuro Oizumi 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).

  • Publication number: 20160024327
    Abstract: The present invention provides a dispersed composition containing an ultramarine (A), a black inorganic pigment (B) (excluding carbon black), and a dispersion medium (C), wherein the weight ratio of ultramarine (A)/black inorganic pigment (B) is from 80/20 to 4.3/95.7. As a result, the invention provides a coating film and a colored item having a high surface resistivity (an antistatic effect) and resistance to overheating by sunlight, as well as a coating composition for forming this coating film and colored item, for use in fields such as black matrices for color filters and automotive coating materials.
    Type: Application
    Filed: May 20, 2013
    Publication date: January 28, 2016
    Applicants: TOYO INK HOLDINGS CO., LTD., TOYOCOLOR CO., LTD
    Inventors: Masahiro OOKAWA, Takeshi NISHINAKA, Tetsuro OIZUMI, Tsutomu HAYASAKA
  • Patent number: 6333371
    Abstract: A coating composition for coloring a glass, containing an organic pigment, a pigment dispersant, a silicon alkoxide compound or a metal alkoxide compound and an organic resin, a process for the production thereof and use thereof.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: December 25, 2001
    Assignee: Toyo Ink Mfg. Co., Ltd.
    Inventors: Toshiyuki Hashimoto, Naohisa Hirata, Tetsuro Oizumi, Hisao Tanaka
  • Patent number: 5856398
    Abstract: There is provided an aqueous pigment dispersion for a light-shielding paper comprising a pigment component, an aqueous resin and water, wherein the pigment component contains 2 to 50% by weight of graphite in which at least 80% of the total number of particles thereof has the maximum diameter of 1 to 30 .mu.m, 2 to 60% by weight of a colored pigment, and 10 to 90% by weight of a white pigment, and each specific gravity of the colored pigment and the white pigment is 2.0 to 6.0 g/cm.sup.3. The pigment dispersion of the present invention can provide light-shielding properties by rendering coating onto a paper base material and also can provide a light-shielding paper which facilitates recycling and has a high quality when recycling of waste paper is effected.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: January 5, 1999
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Tetsuro Oizumi, Kosaku Tsuji, Hisao Tanaka, Tsutomu Fujigamori