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
PK
Pentel Kabushiki Kaisha
Rank (All Time):
#3074
of 106,127
Top 3%
170 inventors
254
Patents All Time
Top Inventors at Pentel Kabushiki Kaisha
All Time
Showing 1–50 of 170 inventors
Rank
Name
Patents
1
Shigeo Oka
37
2
Kazuhisa Shimizu
35
3
Tomoaki Shibata
29
#4
Hidekazu Nakazawa
22
#5
Tomozo Sekiguchi
12
#6
Kunio Itoh
9
#7
Junichi Hashimoto
7
#8
Gouji Sakaoka
6
#8
Kunio Ito
6
#8
Yoshihiro Wada
6
#11
Kazunori Suzuki
5
#11
Masayuki Kawasaki
5
#13
Hiromichi Takahashi
4
#13
Kazuma Noguchi
4
#13
Kiyomi Abe
4
#13
Masamitsu Nagahama
4
#13
Nobuo Yokouchi
4
#13
Shigeki Maruyama
4
#13
Takashi Ishikawa
4
#13
Takumi Kurokawa
4
#13
Takashi Tamura
4
#13
Tetsuya Sugiyama
4
#13
Toshiyuki Sasaki
4
#24
Hishao Fukui
3
#24
Hisao Fukui
3
#24
Hiroshi Miyashita
3
#24
Hideyuki Usami
3
#24
Hitoshi Wake
3
#24
Kazuo Sakai
3
#24
Koichiro Katabami
3
#24
Makoto Nagaoka
3
#24
Mitsuo Kazama
3
#24
Naoki Kato
3
#24
Norio Yamada
3
#24
Shungo Sekiguchi
3
#24
Tadashi Matsunaga
3
#24
Takahiko Shimizu
3
#24
Tsuruo Nakayama
3
#24
Tsukasa Sasaki
3
#40
Aya Otsubo
2
#40
Daisaburo Azuma
2
#40
Eishiro Nakagawa
2
#40
Hideaki Oikawa
2
#40
Hirosi Oyama
2
#40
Hiroyuki Saito
2
#40
Hiroyuki Saitou
2
#40
Hiroshi Takahashi
2
#40
Hironori Umetsu
2
#40
Hiroshi Wada
2
#40
Ikuo Takagishi
2
1
2
3
Next »