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
Iruma, JP
2002
64 patents · 36 inventors
Ranked
#1,410
of 30,146 cities
Top 5%
Showing 1–36 of 36 inventors
Rank
Inventor
Primary Company
Patents
1
Junzo Yamada
NTT
12
2
Eiichi Takeuchi
Nippon Steel
4
3
Shinichi Imade
Olympus Optical Co.
3
3
Shinji Imai
Fujifilm
3
3
Tsutomu Haginoya
Tsubakimoto Chain
3
#6
Yoshihiro Kuwabara
Ricoh Company
2
#6
Kunitomo Adachi
Yoshitomi Pharmaceutical Industries
2
#6
Toshiyuki Kohara
Mitsubishi Tanabe Pharma
2
#6
Changhao Gui
Teac
2
#6
Kazuaki Abe
Casio Computer Co.
2
#6
Yoji Maruyama
HGST
2
#6
Takashi Koumura
Honda Motor Co.
2
#6
Takatoshi Hagiwara
Hitachi
2
#14
Masakatsu Sakai
Honda Motor Co.
1
#14
Masatoshi Kiuchi
Mitsubishi Tanabe Pharma
1
#14
Kenichiro Kimura
Honda Motor Co.
1
#14
Kengo Nakayama
Honda Motor Co.
1
#14
Takayasu Machida
Citizen Watch Co.
1
#14
Masayuki Nagahori
Nissan Tanaka
1
#14
Takao Hashimoto
Toa Nenryo Kogyo
1
#14
Nagahiko Nagasaka
—
1
#14
Eiichi Toyonaga
Sumitomo Electric Industries
1
#14
Kenji Edazawa
Casio Computer Co.
1
#14
Kenji Edasawa
Casio Computer Co.
1
#14
Koji Teshima
Mitsubishi Tanabe Pharma
1
#14
Masayoshi Uehata
Mitsubishi Pharma
1
#14
Masatake Fujimura
Mitsubishi Pharma
1
#14
Hiroomi Watanabe
Teac
1
#14
Hisamitsu Miyazaki
Ebara
1
#14
Shunji Sasabe
Hitachi
1
#14
Koji Seio
Mitsubishi Pharma
1
#14
Teruo Tsuchiya
Myotoku Co.
1
#14
Masaya Ueno
Rohm Co.
1
#14
Kikuo Iwasaka
Pentax
1
#14
Takashi Mouri
Canon
1
#14
Akira Asari
Seikagaku
1