TK

Toshiaki Kumazawa

KC Kyowa Hakko Kogyo Co.: 11 patents #82 of 943Top 9%
OC Olympus Optical Co.: 3 patents #953 of 2,334Top 45%
SR Srl: 1 patents #15 of 47Top 35%
Overall (All Time): #328,050 of 4,157,543Top 8%
15
Patents All Time

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDate
6211227 Tricyclic compounds Makoto Yoshida, Takashi Seishi, Shigeru Aono, Tsuyoshi Yamagata, Kaoru Atsuki +3 more 2001-04-03
6150355 Phenylpiperidine derivative Hirokazu Koshimura, Shigeru Aono, Shunji Ichikawa, Shigeto Kitamura 2000-11-21
5885771 Antigenic peptide compound and immunoassay 1999-03-23
5679703 Tricyclic compounds having ACAT inhibiting activity Masashi Yanase, Shiro Shirakura, Eiko Oishi, Koji Yamada 1997-10-21
5607955 Tricyclic compounds on angiotensin II receptor antagonists Etsuo Ohshima, Fumihiko Kanai, Hideyuki Sato, Hiroyuki Obase, Shiho Takahara +3 more 1997-03-04
5478840 Tricyclic compounds Etsuo Ohshima, Fumihiko Kanai, Hideyuki Sato, Hiroyuki Obase, Shiho Takahara +3 more 1995-12-26
5478835 Tricyclic compounds and intermediates thereof Masashi Yanase, Hiroyuki Harakawa, Hiroyuki Obase, Shoji Oda, Shiro Shirakura +2 more 1995-12-26
5378701 Tricyclic compounds Etsuo Ohshima, Fumihiko Kanai, Hideyuki Sato, Hiroyuki Obase, Shiho Takahara +3 more 1995-01-03
5340807 Tricyclic compounds and intermediates thereof Masashi Yanase, Hiroyuki Harakawa, Hiroyuki Obase, Shoji Oda, Shiro Shirakura +2 more 1994-08-23
5239083 Indole derivatives which inhibit steroid 5.alpha. reductase Hitoshi Takami, Hiroyuki Obase, Nobuyuki Kishibayashi, Akio Ishii 1993-08-24
5204446 Polypeptide having immunoreactivity with antibody specific to hepatitis B virus Masatoshi Osanai 1993-04-20
5116863 Dibenz[b,e]oxepin derivative and pharmaceutical compositions thereof Etsuo Oshima, Shizuo Otaki, Hiroyuki Obase, Kenji Ohmori, Hidee Ishii +3 more 1992-05-26
4937200 Method of effecting immunoassay by using affinity chromatography Makoto Nakamura, Eriko Kogure 1990-06-26
4855229 Measurement method of peroxidase activity Eriko Kogure, Makoto Nakamura 1989-08-08
4547496 Antiulcer [1] benzepino[3,4-b]pyridine and compositions Yoshimasa Oiji, Hiroshi Tanaka, Katsuichi Shuto 1985-10-15