Patents by Inventor Hiroh Kawada

Hiroh Kawada 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).

  • Photosensitive compositions
    Patent number: 4467025
    Abstract: A photosensitive composition containing an o-naphthoquinonediazido compound of Formula I ##STR1## wherein X is an oxy or amino group, Y is a cyano or nitro group, and n is an integer of 2 to 5, and an organic dye capable of changing its color when the photosensitive composition is exposed.
    Type: Grant
    Filed: February 15, 1983
    Date of Patent: August 21, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kiyoshi Goto, Hiroh Kawada, Noriyasu Kita
  • Ink composition for ink jet printing
    Patent number: 4176361
    Abstract: Disclosed is an aqueous ink composition useful for ink jet printing, which comprises 2-12 wt % of a water soluble dye, 35-80 wt % of a polyhydric alcohol having 2-6 carbon atoms.
    Type: Grant
    Filed: May 12, 1976
    Date of Patent: November 27, 1979
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Hiroh Kawada, Kiyoshi Goto, Yoshio Kurita