TK

Toshihito Kumagai

TC Taisho Pharmaceutical Co.: 24 patents #5 of 557Top 1%
NC Nihon Nohyaku Co.: 7 patents #26 of 243Top 15%
NI Nissan Chemical Industries: 1 patents #655 of 1,150Top 60%
Overall (All Time): #174,657 of 4,157,543Top 5%
24
Patents All Time

Issued Patents All Time

Showing 1–24 of 24 patents

Patent #TitleCo-InventorsDate
8642777 Process for producing 3-alkoxy-2-amino-6-fluorobicyclo [3.1.0] hexane-2,6-dicarboxylic acid derivative and intermediate thereof Noriaki Murase, Hisaya Wada, Hisahide Tanimoto, Koumei Ohta, Yoshihiro Kimura 2014-02-04
8044068 Aminopyrrolidine compound Taketoshi Okubo, Takaaki Ishii, Toshio Nakamura, Kumi Abe, Yuri Amada +6 more 2011-10-25
7601734 Cyclic amine compound Toshio Nakamura, Yuri Amada, Yoshinori Sekiguchi 2009-10-13
7528124 1,3-dihydro-2H-indol-2-one derivative Takeshi Kuwada, Tsuyoshi Shibata, Masato Hayashi, Yuri Fujisawa, Yoshinori Sekiguchi 2009-05-05
7160900 Tetrahydropyridino or piperidino heterocyclic derivatives Atsuro Nakazato, Taketoshi Okubu, Kazuya Kameo 2007-01-09
6894168 Carbamoyl tetrahydropyridine derivatives Atsuro Nakazato, Taketoshi Okubo, Kazuyuki Tomisawa 2005-05-17
6852732 Tetrahydropyridino or piperidino heterocylic derivatives Atsuro Nakazato, Taketoshi Okubo, Kazuya Kameo 2005-02-08
6825375 Intermediate and process for producing fluorinated carboxylic acid derivative from the same Atsuro Nakazato, Kazunari Sakagami, Takeo Taguchi 2004-11-30
6806275 Arylpiperidine derivatives and use thereof Masashi Nagamine, Makoto Gotoh, Masanori Yoshida, Atsuro Nakazato, Shigeyuki Chaki +1 more 2004-10-19
6770676 Dicarboxylic acid derivatives Atsuro Nakazato, Kosuke Kanuma, Kazunari Sakagami 2004-08-03
6600038 Carbamoyl tetrahydropyridine derivatives Atsuro Nakazato, Taketoshi Okubo, Kazuyuki Tomisawa 2003-07-29
6500958 Carboxylic acid derivatives and process for producing the same Atsuro Nakazato, Kazunari Sakagami, Kazuyuki Tomisawa 2002-12-31
6479674 Carboxylic acid derivatives and process for producing same Atsuro Nakazato, Kazunari Sakagami, Kazuyuki Tomisawa 2002-11-12
6407121 Arylpiperidine derivatives and use thereof Masashi Nagamine, Makoto Gotoh, Masanori Yoshida, Atsuro Nakazato, Shigeyuki Chaki +1 more 2002-06-18
6392086 Intermediates and process for producing fluorine-containing amino acid compound by using the same Atsuro Nakazato, Kazunari Sakagami, Kazuyuki Tomisawa, Hisanako Ito, Takeo Taguchi 2002-05-21
6380384 1,2-dihydro-2-oxoquinoline derivatives Atsuro Nakazato, Taketoshi Okubo, Shigeyuki Chaki, Kazuyuki Tomisawa, Masashi Nagamine +2 more 2002-04-30
6333428 6-fluorobicyclo[3.1.0]hexane derivatives Atsuro Nakazato, Kazunari Sakagami, Kazuyuki Tomisawa 2001-12-25
6329525 1,2-Dihydro-2-oxoquinoline derivatives Atsuro Nakazato, Taketoshi Okubo, Shigeyuki Chaki, Kazuyuki Tomisawa, Masashi Nagamine +2 more 2001-12-11
6316498 Fluorine-containing amino acid derivatives Atsuro Nakazato, Kazunari Sakagami, Kazuyuki Tomisawa 2001-11-13
6291467 Heteroaromatic derivatives Atsuro Nakazato, Shigeyuki Chaki, Kazuyuki Tomisawa, Masashi Nagamine, Makoto Gotoh +1 more 2001-09-18
6281355 Nitrogen-containing tetracyclic compounds Atsuro Nakazato, Taketoshi Okubo, Shigeyuki Chaki, Kazuyuki Tomisawa, Masashi Nagamine +3 more 2001-08-28
6187781 4-Tetrahydropyridylpyrimidine derivatives Atsuro Nakazato, Taketoshi Okubo, Izumi Aibe, Hideo Tanaka, Shigeyuki Chaki +2 more 2001-02-13
6166033 2-carbonylthiazole derivatives and use of the same Atsuro Nakazato, Shigeyuki Chaki, Kazuyuki Tomisawa, Masashi Nagamine, Makoto Gotoh +1 more 2000-12-26
5990151 Optically active substituted phenylalkylamine derivatives Atsuro Nakazato, Tomoki Miyazawa, Koumei Ohta, Yutaka Kawashima, Katsuo Hatayama 1999-11-23