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
NS
Nippon Gakki Seizo
Rank (All Time):
#1345
of 106,127
Top 2%
332 inventors
644
Patents All Time
Top Inventors at Nippon Gakki Seizo
All Time
Showing 1–50 of 332 inventors
Rank
Name
Patents
1
Kenji Yokoyama
37
2
Akira Nakada
36
3
Eiichiro Aoki
30
3
Takatoshi Okumura
30
#5
Hideo Suzuki
27
#6
Minoru Ogita
22
#7
Yasuji Uchiyama
21
#8
Masatada Wachi
18
#8
Akiyoshi Oya
18
#10
Eiichi Yamaga
17
#11
Eisaku Okamoto
16
#11
Norio Tomisawa
16
#11
Takatoshi Ishii
16
#14
Tetsuo Nishimoto
15
#15
Shigemitsu Yamaoka
14
#15
Terumoto Nonaka
14
#17
Kazuo Kurahashi
12
#17
Kazuhiko Nishi
12
#17
Koji Niimi
12
#17
Makoto Kaneko
12
#17
Mitsumi Katoh
12
#17
Mikio Ogusu
12
#17
Ryozo Yamashita
12
#17
Shigeru Yamada
12
#17
Akio Imamura
12
#26
Masayuki Takamura
11
#26
Mitsumi Kato
11
#28
Shinji Kumano
10
#28
Takeshi Adachi
10
#30
Kenzaburo Iijima
9
#30
Masanobu Chibana
9
#32
Kazuo Urata
8
#32
Kiyoshi Yoshida
8
#32
Tadahiko Hotta
8
#32
Teruo Hiyoshi
8
#32
Toshiharu Hoshi
8
#32
Tsuyoshi Futamase
8
#32
Yasuhiko Kamoshita
8
#32
Yoshinori Hayashi
8
#40
Mario Bellini
7
#40
Shimaji Okamoto
7
#40
Tatsuhiro Koike
7
#40
Takao Nakaya
7
#44
Kenzaburou Iijima
6
#44
Koichi Kozuki
6
#44
Masayuki Iwamatsu
6
#44
Takuya Tamaru
6
#44
Takashi Yoshida
6
#44
Yohei Nagai
6
#44
Akira Nakamura
6
1
2
3
Next »