Kenichi Chiba has been granted 10 US patents while listed as an inventor at Eisai . The first was granted in 1992 and the most recent in December 2012. Kenichi Chiba ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Kenichi Chiba in Tsuchiura, JP.
Patents per Year Patents granted per year, 1992 to 2012 Bar chart with a peak of 2 patents in 1993. peak 2 1992: 1 patents 1992 1993: 2 patents 1993 1994: 2 patents 1994 1996: 1 patents 1996 1998: 1 patents 1998 2010: 1 patents 2010 2011: 1 patents 2011 2012: 1 patents 2012
Issued Patents All Time
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Showing 1–10 of 10 patents
Patent # Title Co-Inventors Date
8329742 Macrocyclic compounds useful as pharmaceuticals Roch Boivin , Jesse Chow , Hong Du , Yoshihito Eguchi , Masanori Fujita +24 more 2012-12-11
7915306 Macrocyclic compounds useful as pharmaceuticals Hong Du , Yoshihito Eguchi , Masanori Fujita , Masaki Goto , Fabian Gusovsky +20 more 2011-03-29
7799827 Macrocyclic compounds useful as pharmaceuticals Roch Boivin , Jesse Chow , Hong Du , Yoshihito Eguchi , Masanori Fujita +24 more 2010-09-21
5789446 Therapeutic agent for treating joint diseases associated with arthritis Akiyoshi Uchiyama , Kenzo Muramoto , Takashi Yamanaka , Isao Yamatsu 1998-08-04
5527948 Naphthalene derivative Makoto Okita , Hiroshi Shirota , Masayuki Tanaka , Toshihiko Kaneko , Katsuya Tagami +13 more 1996-06-18
5319139 Naphthalene derivatives Hiroyuki Yoshimura , Shinya Abe , Tetsuya Kawahara , Naoyuki Shimomura , Kazuo Okano +12 more 1994-06-07
5298649 Naphthalene derivative Makoto Okita , Hiroshi Shirota , Masayuki Tanaka , Toshihiko Kaneko , Katsuya Tagami +13 more 1994-03-29
5262565 Naphthalene derivatives Hiroyuki Yoshimura , Shinya Abe , Tetsuya Kawahara , Takashi Inoue , Hiroshi Shirota +12 more 1993-11-16
5237091 Naphthalene derivatives Hiroyuki Yoshimura , Shinya Abe , Tetsuya Kawahara , Naoyuki Shimomura , Kazuo Okano +12 more 1993-08-17
5134111 Naphthalene derivative Makoto Okita , Hiroshi Shirota , Masayuki Tanaka , Toshihiko Kaneko , Katsuya Tagami +13 more 1992-07-28