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
›
Nihon Plast Co.
NC
Nihon Plast Co.
— 236 Patents
Rank
(All Time):
#3,284
of
106,120
Top 4%
253
inventors
236
Patents All Time
Top Inventors at Nihon Plast Co.
All Time
Showing
1–50
of
253
inventors
Rank
Name
Patents
1
Kazuhiro Kaneko
29
1
Kazuyoshi Nishijima
29
3
Toshiyuki Sugiyama
18
#4
Tetsuji Endo
15
#4
Yohei Kiuchi
15
#6
Aki Yokoyama
13
#6
Mikio Ochiai
13
#8
Masami Tonooka
10
#9
Kenichi Kamio
8
#9
Shuji Yamada
8
#11
Akito Urushibata
7
#11
Akihiko Yamami
7
#11
Michitaka Suzuki
7
#11
Takahiro Suwama
7
#15
Hideaki Saito
6
#15
Kazuo Inaba
6
#15
Kazuo Matsuyama
6
#15
Takenori Kurata
6
#15
Tsuyoshi Watanabe
6
#20
Akira Kawai
5
#20
Akio Kawamoto
5
#20
Daisuke Serizawa
5
#20
Daisuke Takei
5
#20
Hidenobu Suzuki
5
#20
Katsuya Muramatsu
5
#20
Masatoshi Ishigaki
5
#20
Masahito Ishizuka
5
#20
Mamoru Takagi
5
#20
Masaki Ueno
5
#20
Motoru Komatsu
5
#20
Naoki Yamamoto
5
#20
Satoru Ichikawa
5
#20
Takashi MITOBE
5
#20
Yoshinori Goto
5
#20
Yoshifumi Kamano
5
#36
Chiari SAITO
4
#36
Hiroyuki Iwamoto
4
#36
Junichi Umehara
4
#36
Kazuyuki Yamamoto
4
#36
Kazuhisa Yamamoto
4
#36
Kevin Dominic Delaney
4
#36
Kei Sano
4
#36
Masahiro Ooka
4
#36
Norimasa Goto
4
#36
Norio Hayakawa
4
#36
Sadayuki Kawakami
4
#36
Satoshi Kitazawa
4
#36
Takeshi Fujimori
4
#36
Tadao Kanuma
4
#36
Tatsuhiko Nakamura
4
1
2
3
Next »
Related Companies
Adc Gmbh
236
Sharper Image
236
Gencorp
236
Gulf Research & Development
236
Microsemi
236
Sage Products
236
Visera Technologies Company Limited
236
Boston Dynamics
236
Positec Power Tools (Suzhou) Co.
236