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
Chikusei, JP
2004
28 patents · 19 inventors
Ranked
#2,727
of 30,370 cities
Top 9%
Showing 1–19 of 19 inventors
Rank
Inventor
Primary Company
Patents
1
Itsuo Watanabe
Hitachi Chemical Company
3
1
Masami Yusa
Hitachi Chemical Company
3
3
Shinsuke Hagiwara
Hitachi Chemical Company
2
3
Katsumi Oishi
GE
2
3
Yasuo Miyadera
Hitachi Chemical Company
2
3
Shigeo Sase
Hitachi Chemical Company
2
3
Michitoshi Arata
Hitachi Chemical Company
2
#8
Masami Arai
Hitachi Chemical Company
1
#8
Tatsuo Kawata
Hitachi Chemical Company
1
#8
Masahiro Katou
Hitachi
1
#8
Teiichi Inada
Hitachi Chemical Company
1
#8
Yasushi Kumashiro
Hitachi Chemical Company
1
#8
Kenichi Oohori
Hitachi Chemical Company
1
#8
Yoshiaki Tsubomatsu
Hitachi Chemical Company
1
#8
Kazunori Miyata
Sanyo Electric Co.
1
#8
Atsushi Kuwano
Hitachi Chemical Company
1
#8
Hiroyuki Kuriya
Hitachi Chemical Company
1
#8
Kiyoshi Yamanoi
Hitachi Chemical Company
1
#8
Yasushi Katoh
Hitachi Chemical Company
1