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 (1997):
#316
of 13,859
Top 3%
180 inventors
40
Patents 1997
Top Inventors at Eisai
1997
Showing 101–150 of 180 inventors
Rank
Name
Patents
#80
Issei Ohtsuka
1
#80
Isao Saito
1
#80
Isao Sugiyama
1
#80
Itaru Tsukada
1
#80
Junichi Nagakawa
1
#80
Katsura Hata
1
#80
Kanemasa Katsu
1
#80
Katsuhiro Moriya
1
#80
Kazumasa Nara
1
#80
Katsumi Shimizu
1
#80
Katsuya Tagami
1
#80
Keizoh Satoh
1
#80
Kiyoshi Oketani
1
#80
Kiyomi Tamatsu
1
#80
Kozo Akasaka
1
#80
Koichi Kikuchi
1
#80
Kohtaro Kodama
1
#80
Kohtarou Kodama
1
#80
Kouzou Morita
1
#80
Koichi Nose
1
#80
Kunizou Higurashi
1
#80
Lynn Hawkins
1
#80
Makoto Kaino
1
#80
Makoto Kotake
1
#80
Masayuki Matsukura
1
#80
Manabu Murakami
1
#80
Masayuki Namiki
1
#80
Mamoru Saito
1
#80
Masanobu Shinoda
1
#80
Manabu Shirato
1
#80
Masaichi Yamamoto
1
#80
Manabu Yanagisawa
1
#80
Megumi Ikemori
1
#80
Mitsuru Emi
1
#80
Michiko Ohtake
1
#80
Mikio Tagaya
1
#80
Mikio Tomimatsu
1
#80
Motoji Kogushi
1
#80
Motosuke Yamanaka
1
#80
Naoya Kishi
1
#80
Naoki Kobayashi
1
#80
Noriyasu Hirose
1
#80
Noriyoshi Iwata
1
#80
Norimasa Miyamoto
1
#80
Osamu Asano
1
#80
Ryosaku Tagaya
1
#80
Sachiyuki Hamano
1
#80
Satoshi Katayama
1
#80
Shin Araki
1
#80
Shinji Suda
1
« Prev
1
2
3
4
Next »