Patent Leaderboard
USPTO Patent Rankings
Data through Dec 31, 2025
Search
Companies
Inventors
Cities
States
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
Home
›
Companies
›
Kitagawa Industries Co.
KC
Kitagawa Industries Co.
— 251 Patents
Rank
(All Time):
#3,115
of
106,120
Top 3%
112
inventors
251
Patents All Time
Top Inventors at Kitagawa Industries Co.
All Time
Showing
1–50
of
112
inventors
Rank
Name
Patents
1
Kazuhiro Matsui
26
2
Hiroji Kitagawa
24
3
Tatsuya Nakamura
18
#4
Hideo Yumi
15
#5
Tomohisa Kurita
13
#5
Yasuhiro Kawaguchi
13
#7
Akio Yamaguchi
12
#7
Masaru Yagi
12
#9
Akio Fujioka
11
#9
Hideharu Kawai
11
#9
Yasuo Kondo
11
#12
Katsuyuki Morita
10
#12
Yoshihito Nakano
10
#14
Asaharu Nakagawa
9
#14
Nobuaki Fujimoto
9
#16
Kazushige Ueno
8
#16
Teruaki Yuoka
8
#16
Toru Matsuzaki
8
#16
Yoshitoki Hayashi
8
#20
Haruyuki Sugiura
7
#20
Hiroki Kitano
7
#20
Katsumasa Takahashi
7
#23
Hiroshi Aoyama
6
#23
Takashi Mizuno
6
#25
Kazuki Yamada
5
#25
Morinobu Endo
5
#27
Fuminori Ito
4
#27
Hideaki Akizuki
4
#27
Hiroto Yoshino
4
#27
Kenji Konda
4
#27
Masahiro Saito
4
#27
Tatsuya Uchida
4
#27
Tomokazu Tanimizu
4
#27
Yoshiaki Yanase
4
#35
Kazutoshi Takeda
3
#35
Koichiro Jujo
3
#35
Lu Zhao
3
#35
Masato Takenaka
3
#35
Satoshi Deguchi
3
#35
Shigeo Suzuki
3
#35
Shinya Washino
3
#35
Taichi Ishihara
3
#35
Takeshi Tokoro
3
#35
Tetsuo Uchiyama
3
#35
Tsutomu Kawai
3
#35
Yasuo Yamazaki
3
#35
Yoshinori Ohashi
3
#35
Yuya Okada
3
#49
Hiroyoshi Ishiguro
2
#49
Josue Ortiz Medina
2
1
2
3
Next »
Related Companies
Rhone-Poulenc Rorer S.A.
251
Cephalon
251
United States Steel
251
Keter Plastic
251
Touchtunes Music Company
251
Novelis
251
Bomag Gmbh
251
Thyssenkrupp Steel Europe Ag
251
Aurora Operations
250