Patent Leaderboard
USPTO Patent Rankings
Data through Sept 30, 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
›
Ykk
YK
Ykk
— 43 Patents in 2021
Rank
(2021):
#925
of
31,507
Top 3%
98
inventors
43
Patents 2021
Top Inventors at Ykk
2021
Showing
51–98
of
98
inventors
Rank
Name
Patents
#19
Masayoshi Kojima
1
#19
Masaki Meiwa
1
#19
Madoka Nanbu
1
#19
Makoto Oshima
1
#19
Matthew Rawstron
1
#19
Makoto Saito
1
#19
Makoto Yamazaki
1
#19
Michael Fleming
1
#19
Mitsuo Kobayashi
1
#19
Muneyoshi Yokota
1
#19
Nao Yasuda
1
#19
Noriko Torigoe
1
#19
Ryuichi Murasaki
1
#19
Ryohei Nakawatase
1
#19
Ryosuke Takeda
1
#19
Ryusaku Watanabe
1
#19
Shigeki Annaka
1
#19
Shinya Honda
1
#19
Shinichi Imai
1
#19
Shigeyoshi Takazawa
1
#19
Takuya Abe
1
#19
Takahiro Fukuyama
1
#19
Takahiro Fuse
1
#19
Takahiro Kanno
1
#19
Takanori Kumei
1
#19
Takayuki Matsui
1
#19
Takanori Ozawa
1
#19
Tetsuya Fukuzawa
1
#19
Thomas Pferdehirt
1
#19
Toshiaki Takizawa
1
#19
Tsuyoshi Minato
1
#19
Tsutomu Yamada
1
#19
Wei Chen Yeh
1
#19
Wolfgang Coronel
1
#19
Yasuaki Funo
1
#19
Yasushi Miwa
1
#19
Ye Yuan
1
#19
Yoshiyuki Fukuhara
1
#19
Yoshikazu Hamada
1
#19
Yoshito Ikeguchi
1
#19
Yoshitomo Iyoda
1
#19
Yoshinori Kojima
1
#19
Yoshio Taira
1
#19
Yui Hashimoto
1
#19
Yuji Kirita
1
#19
Yuji Kondo
1
#19
Yukako Nakamura
1
#19
Yuji Sasaki
1
« Prev
1
2
Related Companies
Hall Labs
44
Gree Electric Appliances, Inc. Of Zhuhai
44
Delta Electronics (Shanghai) Co.
44
Corning Optical Communications
44
Ablic
44
Vivint
43
Versum Materials Us
43
Verb Surgical
43
Vanguard International Semiconductor
43