Patents by Inventor Ryuhei Inada

Ryuhei Inada 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).

  • Phenylenediamine derivative radical scavenger, brain-infarction depressant, and brain-edema depressant
    Patent number: 6071968
    Abstract: A radical scavenger in accordance with the present invention comprises, as an effective ingredient, a phenylenediamine derivative or a pharmacologically acceptable salt thereof expressed by the following formula 1: ##STR1## wherein R.sub.1 represents a lower alkyl group; and each of R.sub.2 and R.sub.3 represents a hydrogen atom, an alkyl group having 1-10 carbon atoms, an alkenyl group having 1-10 carbon atoms, or benzyl group.The phenylenediamine derivative above mentioned, as a radical scavenger, has a lipid peroxidation inhibitory activity so as to be available for inhibiting brain infarction or brain edema.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: June 6, 2000
    Assignee: Shiseido Co., Ltd.
    Inventors: Chikao Nishino, Kentaro Adachi, Kazayuki Miyazawa, Ryuhei Inada, Tatsuya Otake
  • Pyrazolidine derivative radical scavenger brain-infarction depressant and brain-edema depressant
    Patent number: 5849930
    Abstract: A pyrazolidine derivative or a salt thereof in accordance with the present invention is expressed by the following formula 1: ##STR1## wherein A represents a group expressed by --CH.sub.2 --, --CO--, --CS--, --CH.sub.2 CO--, or --CH.dbd.CH--CO--; B represents a group expressed by --O-- or --NH--; n is an integer of 1 or 2; R represents an alkenyl group; and R.sub.1 and R.sub.2 represent a lower alkyl or benzyl group.The pyrazolidine derivative above mentioned, as a radical scavenger, has antioxidant effect and lipid peroxidation inhibitory activity so as to be available for inhibiting brain infarction or brain edema.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: December 15, 1998
    Assignee: Shiseido Co., Ltd.
    Inventors: Chikao Nishino, Tatsuya Otake, Kentaro Adachi, Ryuhei Inada
  • Antipruritic composition
    Patent number: 5219847
    Abstract: An antipruritic composition for an oral medicine, injection, and external medicine, comprising an effective amount of a chelated zinc (e.g., zinc picolinate) as an antipruritic agent.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: June 15, 1993
    Assignee: Shiseido Company, Ltd.
    Inventors: Shigeru Taguchi, Takashi Suzuki, Chikao Nishino, Yoshimori Fujinuma, Chuji Yanagawa, Michihiro Yamaguchi, Miwako Yamato, Noriko Nakajima, Mie Kitano, Tomomi Okazaki, Masaki Uemura, Ryuhei Inada, Yoshiko Tonomura