Patents by Inventor Kaoru Kasahara

Kaoru Kasahara 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).

  • Electrostatic image developing toner
    Patent number: 6120958
    Abstract: An electrostatic image developing toner comprising an azo type iron complex having a volume average particle size within a range of from 6 to 15 .mu.m and represented by the formula (A): ##STR1## wherein Ar is an aryl group or a substituted aryl group, each of X1, X2, Y1 and Y2 is --S--, --O--, --CO--, --NH-- or --NR-- wherein R is a C.sub.1-4 alkyl group, and Z is a cation as a counter ion.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: September 19, 2000
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Masaki Ookubo, Hiroshi Nanaumi, Kaoru Kasahara
  • Benzamide derivatives and plant growth regulants containing them
    Patent number: 5227511
    Abstract: A benzamide derivative of the formula: ##STR1## wherein R.sub.1 is hydrogen or methyl, and R is hydroxyl, C.sub.1 -C.sub.6 alkoxy, alkenylalkoxy, alkoxyalkoxy, amino, C.sub.1 -C.sub.4 monoalkylamino, monoalkenylamino, dialkylamino or O-cat wherein cat is a metal, ammonium or an organic cation.
    Type: Grant
    Filed: March 14, 1991
    Date of Patent: July 13, 1993
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Hiroyuki Iguchi, Kaoru Kasahara, Shinichi Matsuno, Norimasa Yokoyama, Takeo Motegi
  • Benzamide derivatives and plant growth regulants containing them
    Patent number: 5043006
    Abstract: A benzamide derivative of the formula: ##STR1## wherein R.sub.1 is hydrogen or methyl, and R is hydroxyl, C.sub.1 -C.sub.6 alkoxy, alkenylalkoxy, alkoxyalkoxy, amino, C.sub.1 -C.sub.4 monoalkylamino, monoalkenylamino, dialkylamino or O-cat wherein cat is a metal, ammonium or an organic cation.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: August 27, 1991
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Hiroyuki Iguchi, Kaoru Kasahara, Shinichi Matsuno, Norimasa Yokoyama, Takeo Motegi
  • Plant growth regulant
    Patent number: 4976768
    Abstract: A plant growth regulant containing a benzamide derivatives of the formula: ##STR1## wherein R is hydroxyl, alkoxy, alkoxyalkoxy, alkoxyalkoxyalkoxy, alkenylalkoxy, alkenylalkoxyalkoxy, alkynylalkoxy, alkynylalkoxyalkoxy, monoalkylamino, dialkylamino or O-cat wherein cat is an inorganic or organic cation.
    Type: Grant
    Filed: November 30, 1989
    Date of Patent: December 11, 1990
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Takeo Motegi, Yasuya Sakuraba, Hiroyuki Iguchi, Kaoru Kasahara
  • Plant growth regulant
    Patent number: 4902815
    Abstract: A plant growth regulant containing a benzamide derivative of the formula: ##STR1## wherein R is hydroxyl, alkoxy, alkoxyalkoxy, alkoxyalkoxyalkoxy, alkenylalkoxy, alkenylalkoxyalkoxy, alkynylalkoxy, alkynylalkoxyalkoxy, monoalkylamino, dialkylamino or O-cat wherein cat is an inorganic or organic cation.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: February 20, 1990
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Takeo Motegi, Yasuya Sakuraba, Hiroyuki Iguchi, Kaoru Kasahara
  • Benzamide derivative, process for its production and plant growth regulant
    Patent number: 4878942
    Abstract: A benzamide derivative of the formula: ##STR1## wherein R is hydroxyl, alkoxy, alkoxyalkoxy, alkoxyalkoxyalkoxy, alkenylalkoxy, alkenylalkoxyalkoxy, alkynylalkoxy, alkynylalkoxyalkoxy, monoalkylamino, dialkylamino or O-cat wherein cat is an inorganic or organic cation.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: November 7, 1989
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Takeo Motegi, Mitsumasa Yamazaki, Hiroyuki Iguchi, Kaoru Kasahara