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
PL
Pfu Limited
Rank (2017):
#1051
of 29,974
Top 4%
50 inventors
36
Patents 2017
Top Inventors at Pfu Limited
2017
Rank
Name
Patents
1
Satoshi Kuroda
4
2
Shoya Ishida
4
3
Kiyoto Kosaka
3
#4
Masayoshi Hayashi
3
#5
Masanari Takabatake
3
#6
Ryo Hayashi
3
#7
Akira Iwayama
2
#8
Kazuhiro Koide
2
#9
Keisuke Kokuma
2
#10
Masanobu Hongo
2
#11
Masahiko Kobako
2
#12
Toru Mugimoto
2
#13
Tomoaki Wada
2
#14
Yasunari Itoh
2
#15
Akira Kubota
1
#16
Akifumi Takahashi
1
#17
Go DOJO
1
#18
Hiroshi Okuda
1
#19
Hisashi Yanagisawa
1
#20
Ichiro Fujioka
1
#21
Itsufumi Hato
1
#22
Katsuhito Shimazaki
1
#23
Keisuke Kidoguchi
1
#24
Kenji Kohzeki
1
#25
Kiichiro Shimosaka
1
#26
Kiichi Taniho
1
#27
Kouji Kawase
1
#28
Kouichi Yamashita
1
#29
Mikiro Miyashita
1
#30
Nao Honda
1
#31
Naoki Saitou
1
#32
Osamu Miyakawa
1
#33
Shoko Ando
1
#34
Shinya Imamura
1
#35
Shinichiro Kamimaru
1
#36
Shingo Kanaya
1
#37
Shuichi Morikawa
1
#38
Shogo Yoshita
1
#39
Takayuki Umi
1
#40
Tetsuo Oda
1
#41
Tomohiro Hayashi
1
#42
Toshiichi Idonuma
1
#43
Toshitaka Kawahigashi
1
#44
Tomoharu Nakamura
1
#45
Yasuo Omori
1
#46
Yoshikazu Takabatake
1
#47
Yukihiro Kageta
1
#48
Yuki Kasahara
1
#49
Yuuichi Komuro
1
#50
Yusuke Mizuno
1