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
Ooi, JP
All Time
128 patents · 29 inventors
Ranked
#14,054
of 111,555 cities
Top 15%
Showing 1–29 of 29 inventors
Rank
Inventor
Primary Company
Patents
1
Naomi Inaba
Toa Nenryo Kogyo
33
2
Masato Komatsu
Toa Nenryo Kogyo
9
3
Yukio Nagashima
Toa Nenryo Kogyo
8
3
Tadamori Sakakibara
Toa Nenryo Kogyo
8
#5
Yoshihisa Matsushima
Toa Nenryo Kogyo
6
#5
Tokuzo Ikeda
Toa Nenryo Kogyo
6
#5
Nobukazu Okamoto
Toa Nenryo Kogyo
6
#5
Kazushi Tsurutani
Tonen
6
#9
Eiji Sezaki
Advanced Elastomer Systems
5
#9
Kiyoshi Koga
Honda Motor Co.
5
#9
Tsuyoshi Minemura
Nisshin Pharma
5
#12
Kazuyoshi Namiyama
Tonen
3
#12
Kitsusho Kitano
Toyota
3
#12
Shuuji Takahashi
Honda Motor Co.
3
#15
Noboru Higashimoto
Tonen
2
#15
Shigeo Takagi
Freund Industrial Co.
2
#15
Hirokazu Horii
Nissan Motor Co.
2
#15
Yuuji Fujita
Japan Polychem
2
#15
Akira Saiai
Tonen
2
#15
Chiaki Shoujima
Hitachi
2
#15
Yasuharu Yokoyama
Petroleum Energy Center
2
#22
Naomi Inabe
Toa Nenryo Kogyo
1
#22
Koji Susa
Honda Motor Co.
1
#22
Tomoko Segawa
Petroleum Energy Center
1
#22
Osanori Godo
Honda Motor Co.
1
#22
Masaaki Kadono
Toa Nenryo Kogyo
1
#22
Ikuko Fujinawa
Sumitomo Electric Industries
1
#22
Keiichi Morikubo
Toa Nenryo Kogyo
1
#22
Akihisa Nakada
Unknown
1