Patents by Inventor Tetsurou Iwaya

Tetsurou Iwaya 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).

  • Compound for color-producing composition, and recording material
    Patent number: 7807738
    Abstract: A urea-urethane compound having one or more urea groups and one or more urethane groups in the molecular structure, the number of said urea groups (A) and the number of said urethane groups (B) satisfying the following numerical formula: 10?(A+B)?3 wherein each of A and B is an integer of 1 or more.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: October 5, 2010
    Assignee: Chemipro Kasei Kaisha, Ltd.
    Inventors: Kazuo Kabashima, Hiroshi Kobayashi, Tetsurou Iwaya
  • NOVEL COMPOUND FOR COLOR-PRODUCING COMPOSITION, AND RECORDING MATERIAL
    Publication number: 20100105941
    Abstract: A urea-urethane compound having one or more urea groups and one or more urethane groups in the molecular structure, the number of said urea groups (A) and the number of said urethane groups (B) satisfying the following numerical formula: 10?(A+B)?3 wherein each of A and B is an integer of 1 or more.
    Type: Application
    Filed: October 21, 2009
    Publication date: April 29, 2010
    Inventors: Kazuo KABASHIMA, Hiroshi Kobayashi, Tetsurou Iwaya
  • Compound for color-producing composition, and recording material
    Patent number: 7635662
    Abstract: A urea-urethane compound having one or more urea groups and one or more urethane groups in the molecular structure, the number of said urea groups (A) and the number of said urethane groups (B) satisfying the following numerical formula: 10?(A+B)?3 wherein each of A and B is an integer of 1 or more.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: December 22, 2009
    Assignee: Chemipro Kasei Kaisha, Ltd.
    Inventors: Kazuo Kabashima, Hiroshi Kobayashi, Tetsurou Iwaya
  • Novel compound for color-producing composition, and recording material
    Publication number: 20010044553
    Abstract: A urea-urethane compound having one or more urea groups and one or more urethane groups in the molecular structure, the number of said urea groups (A) and the number of said urethane groups (B) satisfying the following numerical formula:
    Type: Application
    Filed: March 2, 2001
    Publication date: November 22, 2001
    Inventors: Kazuo Kabashima, Hiroshi Kobayashi, Tetsurou Iwaya