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
›
Kddi R&D Laboratories
KL
Kddi R&D Laboratories
Rank
(All Time):
#28,393
of
106,127
Top 30%
55
inventors
21
Patents All Time
Top Inventors at Kddi R&D Laboratories
All Time
Showing
1–50
of
55
inventors
Rank
Name
Patents
1
Sei Naito
3
1
Takayuki Warabino
3
1
Tomonobu Yoshino
3
1
Yasuyuki Nakajima
3
#5
Atsushi Koike
2
#5
Daniel J. Blumenthal
2
#5
Daisuke Morikawa
2
#5
Hajime Nakamura
2
#5
Hideaki Iwashita
2
#5
Hiromasa Yanagihara
2
#5
Hsu-Feng Chou
2
#5
John E. Bowers
2
#5
Kazunori Takeuchi
2
#5
Kohsuke Nishimura
2
#5
Masayoshi Ohashi
2
#5
Masaru Sugano
2
#5
Masashi Usami
2
#5
Ryo Inohara
2
#5
Satoshi Konishi
2
#5
Satoshi Miyaji
2
#5
Sei Naitou
2
#5
Shinichi Nomoto
2
#5
Shinji Ota
2
#5
Zhaoyang Hu
2
#25
Atsuo Tachibana
1
#25
Gouichi Ishihara
1
#25
Haruhisa Katou
1
#25
Hiroyasu Ishikawa
1
#25
Hideyuki Shinonaga
1
#25
Kanshiro Kashiki
1
#25
Kazuyuki Tasaka
1
#25
Keizo Sugiyama
1
#25
Koichi Takagi
1
#25
Manabu Isomura
1
#25
Masahiro Wada
1
#25
Naoki Fuke
1
#25
Naoki Imai
1
#25
Ryoichi Kawada
1
#25
Shigehiro Ano
1
#25
Shoji Kaneko
1
#25
Shuuichi Matsumoto
1
#25
Shuichi Matsumoto
1
#25
Shinobu Nanba
1
#25
Shigeyuki Sakazawa
1
#25
Shouichi Yamazaki
1
#25
Shoichi Yamazaki
1
#25
Takashi Fujimoto
1
#25
Tadayuki Fukuhara
1
#25
Toru Hasegawa
1
#25
Tomohiro Tsuji
1
1
2
Next »
Related Companies
Fugoo
21
Liposonix
21
Soane Energy
21
Bongrain Sa
21
R.A. Pearson
21
Beijing Boe Vision-Electronic Technology Co.
21
Redmed Limited
21
Advanced Cell Technology
21
Hong Fu Jin Precision (Shenzhen) Co.
21