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 76–100 of 401 patents

Patent #TitleCo-InventorsDate
9145770 Scroll compressor with stepped spiral wraps Hirohumi Hirata, Tetsuzo Ukai, Takahide Ito 2015-09-29
9141035 Developing device forming toner image by feeding toner toward electrostatic latent image formed on circumferential surface of photosensitive drum, and image forming apparatus including the same 2015-09-22
9128348 Light modulation circuit Hiroshi Takahashi, Takashi Goh, Takashi Saida, Kiyofumi Kikuchi 2015-09-08
9106834 Image display controller capable of providing excellent visibility of display area frames, image pickup apparatus, method of controlling the image display controller, and storage medium Saori Hoda, Yoshinobu Sato, Yasushi Ohwa, Yusuke Takeuchi 2015-08-11
9104136 Developer conveyance device, development device, and image forming apparatus Kuniaki Nakano, Eiji Nimura, Koji Kuramashi, Yoshihiro Yamagishi 2015-08-11
9052587 Conductive pattern formation method, conductive pattern-bearing substrate, and touch panel sensor Yoshimi Igarashi 2015-06-09
9046384 Self-calibration method for angle detector, angle detector, circumferential scale calibration device, and angle detector calibration device Hiroki Hanaoka, Satoshi Kiyono 2015-06-02
9008553 Developer conveying device, and developing device and image forming apparatus provided with same Kuniaki Nakano, Eiji Nimura, Koji Kuramashi, Yoshihiro Yamagishi 2015-04-14
8994872 Image pickup apparatus and method for controlling the same Takeshi Ogawa 2015-03-31
8965146 Advanced-format optical modulator with low power consumption and low-loss characteristics Takashi Goh, Yoshiyuki Doi, Shinji Mino, Ken Tsuzuki, Takashi Yamada 2015-02-24
8948546 Optical frequency shifter and optical modulator using the same Takashi Saida, Takashi Goh, Ken Tsuzuki, Shinji Mino 2015-02-03
8913925 Developer conveying device including a plurality of planar portions and a developing device and image forming apparatus provided with same Koji Kuramashi, Yoshihiro Yamagishi, Kuniaki Nakano, Eiji Nimura 2014-12-16
8879873 Optical modulator Takashi Goh 2014-11-04
8787710 Wideband interferometer type polarization light beam combiner and splitter Takayuki Mizuno, Takashi Goh, Shin Kamei, Tsutomu Kitoh 2014-07-22
8786280 Magneto-resistance effect element and sensor Hiraku Hirabayashi, Naoki Ohta 2014-07-22
8786278 Three-dimensional magnetic field sensor and method of producing same Naoki Ohta 2014-07-22
8776579 Substance detection sensor Toshiki Naito, Hiroyuki Hanazono 2014-07-15
8750765 Developing device and image forming apparatus provided therewith Akihiro Watanabe, Hiroyuki Hamakawa 2014-06-10
8744034 Boiling water reactor Mikihide Nakamaru 2014-06-03
8721191 Optical component Motohaya Ishii, Takashi Yamada, Yoshiyuki Doi, Takashi Saida, Ken Tsuzuki +8 more 2014-05-13
8705900 Optical modulator Takashi Goh, Takashi Yamada, Yoshiyuki Doi 2014-04-22
8674233 Photosensitive conductive film, method for forming conductive film, method for forming conductive pattern, and conductive film substrate 2014-03-18
8628314 Scroll compressor including a communication section between the suction chamber and the supply flow path Makoto Takeuchi, Shinta Mishima, Tomohisa Moro 2014-01-14
8628315 Fluid machine Hajime Sato, Makoto Takeuchi, Shinta Mishima, Kazuhide Watanabe 2014-01-14
8528588 Safety valve drive system Takeo Shimizu, Yuka Suzuki 2013-09-10