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

Hiroshi Itoh

Toyota: 58 patents #127 of 26,838Top 1%
Canon: 27 patents #2,142 of 19,416Top 15%
MIMitsui Toatsu Chemicals, Incorporated: 21 patents #26 of 1,543Top 2%
LPLenovo (Singapore) Pte.: 20 patents #113 of 1,301Top 9%
NCNippondenso Co.: 12 patents #111 of 3,479Top 4%
NCNippon Shokubai Co.: 9 patents #114 of 1,108Top 15%
Sumitomo Electric Industries: 8 patents #3,473 of 21,551Top 20%
Mitsubishi Electric: 7 patents #4,301 of 25,717Top 20%
IBM: 6 patents #16,453 of 70,183Top 25%
MCMitsui Chemicals: 5 patents #388 of 2,279Top 20%
OCOlympus Optical Co.: 4 patents #789 of 2,334Top 35%
Sharp Kabushiki Kaisha: 4 patents #3,475 of 10,731Top 35%
OLOlympus: 4 patents #1,098 of 3,097Top 40%
KAKao: 4 patents #816 of 3,221Top 30%
SESeiko Epson: 4 patents #3,385 of 7,774Top 45%
UNUnknown: 4 patents #4,220 of 83,584Top 6%
Ricoh Company: 4 patents #4,167 of 9,818Top 45%
KCKuraray Co.: 4 patents #386 of 1,827Top 25%
Kyocera: 4 patents #773 of 3,732Top 25%
KCKuraray Fastening Co.: 3 patents #6 of 37Top 20%
Nec: 3 patents #4,195 of 14,502Top 30%
Nissan Motor Co.: 3 patents #2,303 of 8,689Top 30%
CLCentral Glass Company, Limited: 2 patents #334 of 968Top 35%
Honda Motor Co.: 2 patents #8,527 of 21,052Top 45%
Kabushiki Kaisha Toshiba: 2 patents #9,982 of 21,451Top 50%
Kawasaki: 2 patents #1,008 of 2,943Top 35%
KCKoken Co.: 2 patents #24 of 123Top 20%
TCTenryu Technics Co.: 2 patents #5 of 14Top 40%
TPTohoku Pioneer: 2 patents #104 of 312Top 35%
TOToshiba: 2 patents #606 of 2,688Top 25%
TKToshiba Kikai: 2 patents #223 of 713Top 35%
YMYamazaki Mazak: 2 patents #73 of 272Top 30%
Sony: 2 patents #12,963 of 25,231Top 55%
JTJapan Science And Technology: 1 patents #225 of 836Top 30%
Pioneer Electronic: 1 patents #1,093 of 1,840Top 60%
JCJapan Radio Co.: 1 patents #56 of 178Top 35%
HKHonda Giken Kabushiki Kaisha: 1 patents #5 of 184Top 3%
HZHitachi Zosen: 1 patents #216 of 531Top 45%
SCShionogi & Co.: 1 patents #620 of 1,054Top 60%
Hitachi: 1 patents #17,742 of 28,497Top 65%
SISumitomo Rubber Industries: 1 patents #1,096 of 1,637Top 70%
FLFujitsu Ten Limited: 1 patents #456 of 996Top 50%
DCDainippon Sumitomo Pharma Co.: 1 patents #107 of 256Top 45%
Fujitsu Limited: 1 patents #14,843 of 24,456Top 65%
DLDenki Kogyo Company, Limited: 1 patents #7 of 32Top 25%
TCToshiba Machine Co.: 1 patents #70 of 186Top 40%
TTToudai Tlo: 1 patents #31 of 79Top 40%
NCNew Japan Chemical Co.: 1 patents #51 of 110Top 50%
NSNippon Steel: 1 patents #2,111 of 4,423Top 50%
MPMitsubishi Tanabe Pharma: 1 patents #254 of 503Top 55%
KUKeio University: 1 patents #190 of 781Top 25%
NCNisshin Steel Co.: 1 patents #240 of 514Top 50%
KCKansai Paint Co.: 1 patents #432 of 822Top 55%
Overall (All Time): #1,866 of 4,157,543Top 1%
257 Patents All Time

Issued Patents All Time

Showing 226–250 of 257 patents

Patent #TitleCo-InventorsDate
4649219 Unsaturated cyclic amido-substituted ether compounds and preparation process thereof Atsuhiko Nitta, Tomio Tanaka, Hideo Kamio 1987-03-10
4637279 Method for controlling a continuously variable transmission Mitsuru Takada 1987-01-20
4632509 Glare-shielding type reflector Shinya Ohmi, Tsuyoshi Fukada, Yasutoshi Suzuki, Kunihiko Hara 1986-12-30
4628773 Method and apparatus for controlling hydraulically-operated continuously variable transmission of belt-and-pulley type Shigeki Hiramatsu, Mitsuru Takada, Tadashi Tamura 1986-12-16
4624153 Continuously variable transmission Mituhiko Okada 1986-11-25
4623222 Liquid crystal type dazzle-free transmissive-reflective mirror Shinya Ohmi, Yasutoshi Suzuki, Tsuyoshi Fukada, Kunihiko Hara 1986-11-18
4622865 Apparatus for controlling continuously variable transmission when accelerating from low speeds Mitsuru Takada 1986-11-18
4569254 Method for controlling an engine installed with continuously variable transmission Shigeki Hiramatsu, Mitsuru Takada 1986-02-11
4530184 Sliding type door assembly Takayo Chikaraishi 1985-07-23
4501223 Coating apparatus Sadayuki Matsuno, Isamu Nishikawa, Tatsuo Awazu, Toshio Matsunaga, Yoshitaka Kitaoka +2 more 1985-02-26
4495779 Air conditioner Tatsuo Tanaka, Akihiko Sugiyama 1985-01-29
4489696 Method and apparatus for controlling the fuel-feeding rate of an internal combustion engine Nobuyuki Kobayashi, Takashi Hattori 1984-12-25
4486838 Apparatus and method for electronic control of automatic transmission avoiding over-quick double gear changing Motoki Endo 1984-12-04
4475517 Air-fuel ratio control method and apparatus for an internal combustion engine Nobuyuki Kobayashi, Yoichi Sugiura 1984-10-09
4469072 Method and apparatus for controlling the fuel-feeding rate of an internal combustion engine Nobuyuki Kobayashi 1984-09-04
4464863 Sliding type door assembly Takayo Chikaraishi 1984-08-14
4462374 Air-fuel ratio control method and apparatus utilizing an exhaust gas concentration sensor Nobuyuki Kobayashi 1984-07-31
4434760 Apparatus for controlling the idling speed of an engine Nobuyuki Kobayashi 1984-03-06
4422497 Device of controlling the idling speed of an engine Norio Komoda, Nobuyuki Kobayashi, Yozi Nishimura, Shigenobu Obara 1983-12-27
4417553 Method and apparatus for controlling the idling speed of an engine wherein the amount of air provided to the engine is increased by a predetermined amount when the engine speed becomes equal to zero Nobushisa Ohkawa 1983-11-29
4414942 Idling speed control device of an internal combustion engine Haruo Watanabe 1983-11-15
4397275 Idling speed control device of an internal combustion engine Haruo Watanabe, Mamoru Kobashi 1983-08-09
4392468 Method and apparatus for controlling the idling speed of an engine Mamoru Kobashi 1983-07-12
4381747 Idling speed control device of an internal combustion engine Nobuyuki Kobayashi, Hiromi Otsuki 1983-05-03
4378768 Method of and apparatus for controlling the idling speed of an engine Mamoru Kobashi 1983-04-05