Patent Leaderboard
All Time
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
1989
1988
1987
1986
1985
1984
1983
1982
1981
1980
Search
Companies
Inventors
Cities
States
EI
Eisai
Rank (All Time):
#1325
of 106,127
Top 2%
998 inventors
660
Patents All Time
Top Inventors at Eisai
All Time
Showing 251–300 of 998 inventors
Rank
Name
Patents
#240
Koichi Katayama
5
#240
Koichi Kikuchi
5
#240
Koichiro Ueda
5
#240
Masahiro Kawahara
5
#240
Naoko Nagaoka
5
#240
Nicholas C. Nicolaides
5
#240
Noriaki Kuwana
5
#240
Norihito Ohi
5
#240
Raymond Pratt
5
#240
Seiji Yoshikawa
5
#240
Shinro Tachibana
5
#240
Tatsuo Horizoe
5
#240
Takaaki Kameyama
5
#240
Takeo Kanai
5
#240
Takahiro Nakazawa
5
#240
Takayuki Ohwaki
5
#240
Tadanobu Takamura
5
#240
Toshinobu Kunii
5
#240
Toshio Takahashi
5
#240
Toshiaki Wakabayashi
5
#240
Yasunori Akita
5
#240
Yasushi Ishihama
5
#240
Yasunobu Kai
5
#240
Yoshihiko Hisatake
5
#240
Yoshiyuki Kawakami
5
#240
Yoshikazu Kuboi
5
#240
Yoshiharu Mizui
5
#240
Yoshikage Nakajima
5
#240
Yoshihiko Norimine
5
#240
Akira Kato
5
#240
Akio Kayano
5
#282
Fabian Gusovsky
4
#282
Hiroshi Shionoya
4
#282
Hiromasa Suzuki
4
#282
Hideki Yoshitomi
4
#282
Hong Du
4
#282
Jeffrey Rose
4
#282
Katsura Hata
4
#282
Katsumi Ida
4
#282
Keizo Sato
4
#282
Keizo Takayanagi
4
#282
Kimio Hamamura
4
#282
John Wang
4
#282
Kokichi Harada
4
#282
Koichi Ito
4
#282
Kohtaro Kodama
4
#282
Koji Yamada
4
#282
Kunizo Higurashi
4
#282
Kyosuke Kito
4
#282
Luigi Grasso
4
« Prev
4
5
6
7
8
Next »