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

Hiroshi Yamazaki — 401 Patents

KOKonica: 46 patents #4 of 1,958Top 1%
Tdk: 27 patents #163 of 3,796Top 5%
KMKonica Minolta: 26 patents #9 of 1,361Top 1%
Sony: 21 patents #1,931 of 25,231Top 8%
KSKyocera Document Solutions: 18 patents #115 of 1,545Top 8%
NTNTT: 18 patents #151 of 4,871Top 4%
HCHitachi Chemical Company: 16 patents #69 of 1,946Top 4%
NDNitto Denko: 16 patents #187 of 2,479Top 8%
SCSeikosha Co.: 15 patents #15 of 312Top 5%
Mitsubishi Electric: 14 patents #1,823 of 25,717Top 8%
KMKonica Minolta: 12 patents #175 of 2,718Top 7%
OCOhi Seisakusho Co.: 12 patents #7 of 196Top 4%
Kabushiki Kaisha Toshiba: 12 patents #2,533 of 21,451Top 15%
Fujitsu Limited: 10 patents #3,161 of 24,456Top 15%
Ricoh Company: 10 patents #2,244 of 9,818Top 25%
Nissan Motor Co.: 9 patents #795 of 8,689Top 10%
ENEnplas: 9 patents #32 of 255Top 15%
CHChisso: 8 patents #104 of 833Top 15%
NHNamiki Seimitsu Houseki: 7 patents #3 of 108Top 3%
MCMabuchi Motor Co.: 5 patents #19 of 228Top 9%
NCNippon Shokubai Co.: 5 patents #248 of 1,108Top 25%
HSHarmonic Drive Systems: 5 patents #31 of 147Top 25%
FCFuji Kiko Co.: 5 patents #22 of 208Top 15%
Canon: 5 patents #9,253 of 19,416Top 50%
AKAsahi Kasei Kabushiki Kaisha: 5 patents #67 of 1,220Top 6%
KCKonishiroku Photo Industry Co.: 5 patents #175 of 894Top 20%
SPSeiko Precision: 4 patents #31 of 173Top 20%
KMKyocera Mita: 4 patents #152 of 763Top 20%
UNUnknown: 3 patents #7,366 of 83,584Top 9%
KIKabushiki Kaisha Isowa: 3 patents #10 of 54Top 20%
LPLenovo (Singapore) Pte.: 3 patents #409 of 1,301Top 35%
ACAdamant Namiki Precision Jewel Co.: 3 patents #5 of 58Top 9%
YKYasuhiro Koike: 3 patents #5 of 25Top 20%
NCNagano Japan Radio Co.: 2 patents #9 of 49Top 20%
O2O2Micro: 2 patents #65 of 174Top 40%
NCNissan Shatai Co.: 2 patents #11 of 67Top 20%
Nec: 2 patents #5,510 of 14,502Top 40%
NCNavitime Japan Co.: 2 patents #8 of 16Top 50%
CUCarleton University: 2 patents #1 of 34Top 3%
Sumitomo Electric Industries: 2 patents #9,741 of 21,551Top 50%
Sharp Kabushiki Kaisha: 2 patents #5,184 of 10,731Top 50%
DCDainippon Pharmaceutical Co.: 2 patents #58 of 207Top 30%
IRInstitute Of Physical And Chemical Research: 2 patents #33 of 172Top 20%
KZKabushiki Kaisha Zuken: 2 patents #2 of 29Top 7%
MSMitsubishi Heavy Industries Thermal Systems: 2 patents #71 of 149Top 50%
FUFukuoka University: 2 patents #5 of 64Top 8%
ICIkeda Bussan Co.: 2 patents #63 of 235Top 30%
HCHidan Co.: 2 patents #5 of 17Top 30%
SCSumitomo Chemical: 1 patents #2,469 of 4,033Top 65%
AFAsahi Kasei Fibers: 1 patents #35 of 96Top 40%
CLCanadian Patents And Development Limited: 1 patents #88 of 449Top 20%
CPChisso Petrochemical: 1 patents #69 of 139Top 50%
DCDainippon Sumitomo Pharma Co.: 1 patents #107 of 256Top 45%
DKDenki Kagaku Kogyo: 1 patents #291 of 655Top 45%
FUFuji: 1 patents #263 of 422Top 65%
FCFuji Machine Mfg. Co.: 1 patents #140 of 245Top 60%
FUFujifilm: 1 patents #3,076 of 4,519Top 70%
FTFujitsu Display Technologies: 1 patents #84 of 137Top 65%
FLFujitsu Microelectronics Limited: 1 patents #212 of 624Top 35%
HRHagiwara Research: 1 patents #3 of 6Top 50%
JMJapan Electronic Materials: 1 patents #16 of 40Top 40%
JCJgc Catalysts And Chemicals: 1 patents #74 of 139Top 55%
JSJsp: 1 patents #80 of 134Top 60%
KCKoito Manufacturing Co.: 1 patents #610 of 1,047Top 60%
MCMaruzen Petrochemical Co.: 1 patents #83 of 174Top 50%
MMMitsubishi Mining: 1 patents #886 of 2,247Top 40%
NSNippon Sanso: 1 patents #107 of 243Top 45%
NENtt Electronics: 1 patents #160 of 358Top 45%
OCOki Electric Industry Co.: 1 patents #1,459 of 2,807Top 55%
OMOmron: 1 patents #1,808 of 3,089Top 60%
Pioneer: 1 patents #1,107 of 1,730Top 65%
RKRikagaku Kenkyusho: 1 patents #70 of 207Top 35%
SESeiko Epson: 1 patents #5,551 of 7,774Top 75%
SKSeiko Koki Kabushiki Kaisha: 1 patents #23 of 27Top 90%
ATAT&T: 1 patents #10,626 of 18,772Top 60%
TKTanaka Kikinzoku Kogyo K.K.: 1 patents #216 of 436Top 50%
Stanford University: 1 patents #2,251 of 5,197Top 45%
YAYamatake: 1 patents #76 of 243Top 35%
Overall (All Time): #631 of 4,157,543Top 1%
401 Patents All Time

Issued Patents All Time

Showing 226–250 of 401 patents

Patent #TitleCo-InventorsDate
6860728 Scroll compressor sealing Makoto Takeuchi, Takahide Itoh, Yasuharu Maruiwa, Takayuki Hagita, Tetsuzou Ukai +1 more 2005-03-01
6846943 Metallocene compound, olefin polymerization catalyst containing the compound, and method for producing an olefin polymer by use of the catalyst Masato Nakano, Tsutomu Ushioda, Toshihiro Uwai, Masami Kimura, Yoshiyuki Ohgi +1 more 2005-01-25
6844126 Electrostatic latent image developing toner and image forming method Ken Ohmura, Asao Matsushima, Shiro Hirano 2005-01-18
6841328 Image forming method Meizo Shirose, Hiroyuki Yamada, Asao Matsushima, Tatsuya Nagase 2005-01-11
6833886 Liquid crystal display control circuit that performs drive compensation for high-speed response Toshiaki Suzuki, Koshu Yonemura, Katsuyoshi Hiraki, Katsunori Tanaka 2004-12-21
6827213 Cosmetic container Keiji Hirotomi, Kenichi Ito, Hideo Fujita 2004-12-07
6822599 Integrated circuit and A/D conversion circuit Masato Yoshioka, Kunihiko Gotoh, Masahiro Kudo, Hiroyuki Nakamoto 2004-11-23
6818161 Molded body of thermoplastic resin having sound absorption characteristics Hisao Tokoro, Satoru Shioya, Mitsuru Shinohara, Akinobu Hira 2004-11-16
6811941 Electrostatic image developing toner and image forming method Kazuhisa Horiuchi, Tatsuya Nagase, Meizo Shirose, Hiroyuki Yamada, Ken Ohmura +3 more 2004-11-02
6806015 Image forming method using flattened spheroidal toner Satoshi Haneda 2004-10-19
6780558 Image forming method Hiroyuki Yamada, Meizo Shirose, Shigenori Kouno 2004-08-24
6768243 Small-size motor brush assembly with electrical noise suppression Hiroshi Kimura 2004-07-27
6746224 Scroll compressor Takahide Itoh, Makoto Takeuchi, Yasuharu Maruiwa, Yukio Nagato, Chikako Sasakawa +1 more 2004-06-08
6717602 Image forming method and image forming apparatus, and electrostatic latent image developing toner used by the same Hiroyuki Yamada, Meizo Shirose, Shigenori Kouno 2004-04-06
6708529 Undergarment Masataka Ikeda 2004-03-23
6703177 Image forming method using a toner for developing a static image Ken Ohmura 2004-03-09
6696468 (S)-4-AMINO-5-CHLORO-2-METHOXY-N-[1-[1-(2-TETRAHYDROFURYL-CARBONYL)-4-PIPERIDINYLMETHYL]-4-PIPERIDINYL]BENZAMIDE, PROCESS FOR THE PREPARATION THEREOF, PHARMACEUTICAL COMPOSITION CONTAINING THE SAME, AND INTERMEDIATE THEREFOR Shiro Kato, Yoshimi Hirokawa, Yoko Kan, Naoyuki Yoshida, Kazuo Morikage +1 more 2004-02-24
6689524 Toner for developing a static latent image and image forming apparatus Ken Ohmura, Naohiro Hirose 2004-02-10
6689522 Image forming method and electrostatic image developing toner Ken Ohmura, Akihiko Itami, Meizo Shirose, Asao Matsushima, Hiroyuki Kozuru +1 more 2004-02-10
6677097 Toner for developing static image and an image forming method Ken Ohmura, Asao Matsushima, Shiro Hirano, Yoshiki Nishimori, Hiroyuki Yamada 2004-01-13
6627714 Method for producing an olefin type copolymer having a cyclic structure Shigeharu Yamamoto, Sakae Kamiyama, Toshifumi Takemori, Yoji Suzuki, Kazuhiko Mizuno +1 more 2003-09-30
6623199 Thrust-out type container for a rod-like article Satoru Naramoto, Yutaka Mihara 2003-09-23
6624649 Prober and low-temperature test equipment having same incorporated therein 2003-09-23
6598053 Drawing generation apparatus Saori Izumi, Ritsuko Fukumuro 2003-07-22
6585501 Scroll compressor sealing Makoto Takeuchi, Takahide Itoh, Yasuharu Maruiwa, Takayuki Hagita, Tetsuzou Ukai +1 more 2003-07-01