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
NC
Nippon Oil & Fats Co.
Rank (All Time):
#2843
of 106,127
Top 3%
409 inventors
277
Patents All Time
Top Inventors at Nippon Oil & Fats Co.
All Time
Showing 1–50 of 409 inventors
Rank
Name
Patents
1
Masaharu Nakayama
21
2
Takeshi Komai
16
3
Masahiro Ishidoya
15
#4
Shuji Suyama
13
#5
Katsuhide Hattori
12
#5
Kishio Shibato
12
#5
Osamu Ohe
12
#5
Suehiro Sakazume
12
#5
Yasuo Moriya
12
#5
Yuichi Orikasa
12
#11
Michiaki Sakaguchi
11
#12
Masato Nagano
10
#12
Nobuyoshi Suzuki
10
#14
Hiroshi Ohmura
9
#14
Masatada Araki
9
#14
Masao Takahashi
9
#14
Motoo Kumagai
9
#14
Shosaku Yamamoto
9
#14
Taizo Igarashi
9
#14
Yoshishige Murata
9
#21
Hiroshi Sakai
8
#21
Kazuo Kakinuma
8
#21
Kazuo Matsuyama
8
#21
Kenji Kato
8
#21
Keiichi Kato
8
#21
Keiji Komoto
8
#21
Kenji Shibamoto
8
#21
Shin-ichi Akimoto
8
#21
Tohru Yasukohchi
8
#30
Fumio Takeuchi
7
#30
Mitsuyuki Mashita
7
#30
Susumu Honda
7
#30
Takaharu Ishizaki
7
#30
Yoshiaki Fukatsu
7
#30
Yutaka Kuroyama
7
#36
Hideo Sawada
6
#36
Shingo Yamazaki
6
#36
Takeo Matsumoto
6
#36
Yasumi Koinuma
6
#36
Yoshihiro Oshibe
6
#41
Hiroshi Doi
5
#41
Hiroshi Goto
5
#41
Hideyo Ishigaki
5
#41
Hisao Ogawa
5
#41
Koichi Kurokawa
5
#41
Masaru Matsushima
5
#41
Naoyuki Amaya
5
#41
Shigeki Banno
5
#41
Shigeru Kakino
5
#41
Yoshitaka Goto
5
1
2
3
Next »