Patents by Inventor Susumu Kasamatsu

Susumu Kasamatsu 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).

  • 4-carbonyl-substituted coumarin compound
    Patent number: 5248784
    Abstract: A novel 4-carbonyl-substituted coumarin compound which is substituted with a carbonyl group in the position-4 of a 7-alkylaminocoumarin derivative and has photosensitivity in the visible region.
    Type: Grant
    Filed: April 16, 1992
    Date of Patent: September 28, 1993
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Tsukasa Ohyama, Kazuhiko Murayama, Yoriaki Matsuzaki, Susumu Kasamatsu, Keisuke Takuma, Kimitoshi Kato
  • Visible radiation sensitive composition containing substituted 3-(benzothiazo-2-yl)-7-diethylaminocoumarin as sensitizers
    Patent number: 5045434
    Abstract: A visible radiation sensitive composition comprising:(A) a photosetting resin containing a photosensitive group capable of crosslinking or polymerizing by photoirradiation,(B) a sensitizer represented by the formula (i): ##STR1## wherein R.sub.1 and R.sub.2 are the same or different lower alkyl, and R.sub.3 is a hydrogen atom, lower alkyl group, alkoxyalkyl group, hydroxyalkoxyalkyl group or alkoxycarbonylalkyl group, and(C) a polymerization initiator.
    Type: Grant
    Filed: December 18, 1990
    Date of Patent: September 3, 1991
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Ichiro Yoshihara, Motoko Okuhara, Takao Yamamoto, Naozumi Iwasawa, Yasuo Doi, Tsukasa Ohyama, Kazuhiko Murayama, Yoriaki Matsuzaki, Susumu Kasamatsu, Keisuke Takuma, Kimitoshi Kato