Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
KW

Koji Watanabe — 255 Patents

Hitachi: 30 patents #925 of 28,497Top 4%
Panasonic: 22 patents #856 of 21,108Top 5%
NONok: 18 patents #5 of 725Top 1%
NINifco: 17 patents #13 of 650Top 2%
IBM: 16 patents #6,952 of 70,183Top 10%
Mitsubishi Electric: 11 patents #2,558 of 25,717Top 10%
TIToray Industries: 9 patents #241 of 3,690Top 7%
Kawasaki: 8 patents #232 of 2,943Top 8%
SESeiko Epson: 8 patents #2,198 of 7,774Top 30%
KCKonishiroku Photo Industry Co.: 8 patents #101 of 894Top 15%
Sony: 7 patents #6,034 of 25,231Top 25%
BIBando Chemical Industries: 6 patents #24 of 303Top 8%
SCSenju Metal Industry Co.: 6 patents #42 of 349Top 15%
Sumitomo Electric Industries: 5 patents #5,365 of 21,551Top 25%
The Yokohama Rubber Co.: 5 patents #270 of 1,136Top 25%
Nec: 4 patents #3,388 of 14,502Top 25%
HOHoriba: 4 patents #114 of 604Top 20%
MAMakita: 4 patents #298 of 770Top 40%
Nissan Motor Co.: 4 patents #1,803 of 8,689Top 25%
OBObayashi: 4 patents #4 of 118Top 4%
SCShinko Electric Industries Co.: 4 patents #182 of 723Top 30%
Ricoh Company: 3 patents #4,826 of 9,818Top 50%
Toyota: 3 patents #8,352 of 26,838Top 35%
FUFujifilm: 3 patents #1,989 of 4,519Top 45%
NCNagase Chemtex: 3 patents #5 of 74Top 7%
Fujitsu Limited: 3 patents #8,614 of 24,456Top 40%
KOKonica: 2 patents #962 of 1,958Top 50%
KSKonica Minolta Sensing: 2 patents #18 of 57Top 35%
HTHitachi Plant Technologies: 2 patents #55 of 279Top 20%
NANabtesco: 2 patents #85 of 320Top 30%
ACAdvics Co.: 2 patents #250 of 686Top 40%
NINikon: 2 patents #1,269 of 2,493Top 55%
NCNitto Boseki Co.: 2 patents #91 of 339Top 30%
Globalfoundries: 2 patents #1,397 of 4,424Top 35%
Pioneer: 2 patents #761 of 1,730Top 45%
Pioneer Electronic: 2 patents #804 of 1,840Top 45%
Honda Motor Co.: 2 patents #8,527 of 21,052Top 45%
Microsoft: 1 patents #24,826 of 40,388Top 65%
ICIchinomiya Denki Co.: 1 patents #2 of 4Top 50%
MMMitsubishi Mining: 1 patents #886 of 2,247Top 40%
KCKohjin Co.: 1 patents #36 of 109Top 35%
KSKawasaki Steel: 1 patents #889 of 1,922Top 50%
RERenesas Electronics: 1 patents #2,739 of 4,529Top 65%
RTRenesas Technology: 1 patents #1,991 of 3,337Top 60%
HCHitachi Plant Engineering & Construction Co.: 1 patents #53 of 194Top 30%
SCSakata Denki Co.: 1 patents #3 of 8Top 40%
MKMeiji Seika Kaisha: 1 patents #353 of 752Top 50%
SCSekisui Chemical Co.: 1 patents #529 of 908Top 60%
ACAsahi Glass Co.: 1 patents #1,233 of 2,251Top 55%
TIToyota Industries: 1 patents #505 of 955Top 55%
FCFuji Electric Co.: 1 patents #1,354 of 2,643Top 55%
TCTokyo Rope Mfg. Co.: 1 patents #38 of 144Top 30%
DIDisco: 1 patents #384 of 708Top 55%
UIUbe Industries: 1 patents #895 of 1,686Top 55%
NENec Electronics: 1 patents #715 of 1,789Top 40%
NCNhk Spring Co.: 1 patents #555 of 1,116Top 50%
HTHitachi Communication Technologies: 1 patents #83 of 214Top 40%
BKBando Kagaku Kabushiki Kaisha: 1 patents #8 of 37Top 25%
NCNippon Light Metal Company: 1 patents #203 of 499Top 45%
AEAlpine Electronics: 1 patents #279 of 637Top 45%
Tokyo, NY: #2 of 99 inventorsTop 3%
Overall (All Time): #1,893 of 4,157,543Top 1%
255 Patents All Time

Issued Patents All Time

Showing 201–225 of 255 patents

Patent #TitleCo-InventorsDate
5762728 Wear-resistant cast aluminum alloy process of producing the same Yukio Kuramasu, Akio Hashimoto, Yoji Namekawa, Sanji Kitaoka, Kenji Tsushima +1 more 1998-06-09
5746927 Electrical connecting device and method for making same Kaoru Hashimoto, Tatuo Chiyonobu, Kyoichiro Kawano, Masato Wakamura, Joe Yamaguchi 1998-05-05
5681403 Magnesium alloy Kunihiko Makino, Toshiro Kawata, Kyosuke Kanemitsu, Masaji Matsunaga, Mamoru Sayashi 1997-10-28
D379335 Automobile tire Koichiro Aikawa, Kazuhito Kimura 1997-05-20
5610371 Electrical connecting device and method for making same Kaoru Hashimoto, Tatuo Chiyonobu, Kyoichiro Kawano, Masato Wakamura, Joe Yamaguchi 1997-03-11
5605418 Road snow melting system using a surface heating element Yoshinori Nagai 1997-02-25
5561954 Molding for a front glass Toru Sugita, Yasutomo Kobayashi, Masaharu Shibao, Akimitsu Mita 1996-10-08
5555685 Molding for a front glass Toru Sugita, Yasutomo Kobayashi, Masaharu Shibao, Akimitsu Mita 1996-09-17
5553428 Molding for a front glass Toru Sugita, Yasutomo Kobayashi, Masaharu Shibao, Akimitsu Mita 1996-09-10
5525062 Training apparatus for singing Nobuyuki Ogawa, Tatsuhiko Numoto, Kenji Muraki 1996-06-11
5493354 Information recording apparatus and information readout apparatus Toshiki Fujisawa, Kenji Yamanouchi, Takao Misawa 1996-02-20
5414963 Belt grinding machine Makoto Inoue 1995-05-16
5415690 Coating composition 1995-05-16
5370076 Method of producing single crystal of KTiOPO.sub.4 Tsutomu Okamoto, Tatsuo Fukui, Yasushi Minoya, Koichi Tatsuki, Shigeo Kubota 1994-12-06
5360251 Flush mount molding member Toru Sugita 1994-11-01
5256429 Composite sheet for artificial leather Yuzuru Honda, Tateo Fujii 1993-10-26
5165833 Clip Hiromichi Nakayama, Kunihiro Fukuhara 1992-11-24
5148185 Ink jet recording apparatus for ejecting droplets of ink through promotion of capillary action Nobumasa Abe, Kiyoharu Momose, Yuichi Nakamura, Tsuneo Handa, Mitsutaka Nishikawa 1992-09-15
5112421 Method for the production of a composite sheet for artificial leather Yuzuru Honda, Tateo Fujii 1992-05-12
5068684 Image forming device Nobumasa Abe, Atsushi Kobayashi, Norio Morishita, Yuji Tanaka 1991-11-26
5035560 Clip Hiromichi Nakayama, Kunihiro Fukuhara 1991-07-30
4998125 Remote-controlled camera Kenji Miyama, Takayuki Oohisa, Koyoshige Okagakiuchi, Zenichi Sakai 1991-03-05
4945381 Image forming apparatus Kiyohiro Yamagata, Nobumasa Abe, Koichi Toba, Atsushi Kobayashi 1990-07-31
4914562 Thermal jet recording apparatus Nobumasa Abe, Kiyoharu Momose, Yuichi Nakamura, Tsuneo Handa, Mitsutaka Nishikawa 1990-04-03
4905538 Camshaft Makoto Kano, Shigeoki Sawada, Ryoji Makino 1990-03-06