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
Hitachi, JP
2005
614 patents · 342 inventors
Ranked
#133
of 28,648 cities
Top 1%
Showing 1–50 of 342 inventors
Rank
Inventor
Primary Company
Patents
1
Shigeru Kakugawa
Hitachi
9
1
Michiya Okada
Hitachi
9
1
Ikuo Hiyama
Hitachi
9
#4
Kinya Aota
Hitachi
8
#5
Hiroshi Yoshiura
Hitachi
7
#5
Mitsuo Kayano
Hitachi
7
#7
Takeshi Kimura
Nissan Motor Co.
6
#7
Makoto Tsumura
Hitachi
6
#7
Shigeo Suzuki
Sumitomo Electric Industries
6
#7
Tsunenori Yamamoto
Hitachi
6
#7
Shiro Yamaoka
Hitachi
6
#7
Minoru Oosuga
Hitachi
6
#7
Tarou Takagi
Hitachi
6
#7
Takayuki Ouchi
Hitachi
6
#15
Isao Takehara
Hitachi
5
#15
Kinya Kobayashi
Hitachi
5
#15
Minoru Ohsuga
Hitachi
5
#15
Shouhei Numata
Hitachi
5
#15
Toru Koyama
Toyoda Gosei Co.
5
#15
Hiroshi Kamimura
Hitachi
5
#21
Atsushi Yamagoshi
Hitachi
4
#21
Ken Takahashi
Hitachi
4
#21
Tooru Tanimizu
Hitachi
4
#21
Yoshiteru Chiba
Hitachi
4
#21
Kazuhiro Ogawa
Hitachi
4
#21
Yoshihisa Kiyotoki
Hitachi
4
#21
Nobuyuki Yamashita
Kubota
4
#21
Akira Miura
Yokogawa Electric
4
#21
Shoichi Hirota
Hitachi Displays
4
#21
Kazuo Hiramoto
Hitachi
4
#21
Hidemitsu Naya
Hitachi High-Technologies
4
#21
Takashi Sase
Hitachi
4
#21
Yuuichirou Ueno
Hitachi
4
#21
Takashi Kano
Sanyo Electric Co.
4
#21
Tomoichi Kamo
Hitachi
4
#21
Katsuhito Shimizu
Hitachi
4
#21
Tetsuya Matsui
Hitachi
4
#21
Shinichi Takaba
Hitachi Cable
4
#21
Yoshiaki Kawato
Hitachi
4
#21
Mitsuo Chigasaki
Hitachi
4
#21
Takeshi Tanaka
Panasonic
4
#42
Shinichi Fukada
Hitachi
3
#42
Masahisa Inagaki
Hitachi
3
#42
Yoko Nakayama
Hitachi
3
#42
Kazumi Anazawa
Hitachi
3
#42
Yasuo Morooka
Hitachi
3
#42
Shouichi Kawamata
Hitachi
3
#42
Miyoshi Takahashi
Hitachi
3
#42
Atsushi Kanke
Hitachi
3
#42
Katsutoshi Nii
Hitachi
3
1
2
3
Next »