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 201–225 of 257 patents

Patent #TitleCo-InventorsDate
4747327 Hydraulic control apparatus for hydraulically-operated power transmitting system having continuously variable transmission Mitsuru Takada, Nobuyuki Kato 1988-05-31
4729834 Method for adsorbing and desorbing Toshimi Nakagawa, Atsuhiko Nitta, Tomio Tanaka, Hideo Kamio, Katsutoshi Nagai 1988-03-08
4725499 Polymer-coated solid materials Atsuhiko Nitta, Hideo Kamio 1988-02-16
4721364 Dazzle-free mirror with photocell in a non-dazzle-free portion Yasutoshi Suzuki, Tsuyoshi Fukada, Shinya Ohmi, Kunihiko Hara 1988-01-26
4718899 Urine absorbing and holding material Atsuhiko Nitta, Tomio Tanaka, Hideo Kamio 1988-01-12
4701283 Process for preparing amidoalkanesulfonic acids Atsuhiko Nitta, Hideo Kamio 1987-10-20
4698764 Diagnostic apparatus for continuously variable transmission Takafumi Inagaki, Hiroshi Sasaoka, Susumu Masutomi, Mitsuru Takada 1987-10-06
4697883 Control apparatus for two section, glare shield mirror Yasutoshi Suzuki, Shinya Ohmi, Kunihiko Hara 1987-10-06
4689745 Apparatus for controlling continuously variable transmission used in vehicle Mitsuru Takada, Hiroshi Sasaoka, Takahumi Inagaki, Susumu Masutomi 1987-08-25
4687956 Liquid crystal element driving apparatus Yasutoshi Suzuki, Tsuyoshi Fukada, Shinya Ohmi, Kunihiko Hara 1987-08-18
4685358 Hydraulic control apparatus for hydraulically-operated power transmitting system having continuously variable transmission 1987-08-11
4683258 Agent for absorbing and releasing water vapor Toshimi Nakagawa, Atsuhiko Nitta, Tomio Tanaka, Hideo Kamio, Ryosuke Enoshita +4 more 1987-07-28
4682518 Method and apparatus for controlling hydraulically-operated power transmitting system including continuously variable transmission Mitsuru Takada, Shigeki Hiramatsu, Tadashi Tamura 1987-07-28
4676601 Drive apparatus for a liquid crystal dazzle-free mirror arrangement Shinya Ohmi, Yasutoshi Suzuki, Tsuyoshi Fukada, Kunihiko Hara 1987-06-30
4672863 Method and apparatus for controlling power transmission system in an automotive vehicle Mitsuru Takada 1987-06-16
4671615 Control apparatus for a dazzle-free reflection mirror of a vehicle Tsuyoshi Fukada, Yasutoshi Suzuki, Shinya Ohmi, Kunihiko Hara 1987-06-09
4669827 Detection of manipulation of position apparatus for dazzle-free mirror Tsuyoshi Fukada, Yasutoshi Suzuki, Shinya Ohmi, Kunihiko Hara 1987-06-02
4669336 Apparatus for controlling line pressure used in V-belt type continuously variable transmission for automobile Mitsuhiko Okada, Nobuyuki Kato, Mitsuru Takada 1987-06-02
4669826 Apparatus for detecting the direction of light for dazzle-free mirrors Shinya Ohmi, Yasutoshi Suzuki, Tsuyoshi Fukada, Kunihiko Hara 1987-06-02
4669825 Control apparatus with delay circuit for antiglare mirror Yasutoshi Suzuki, Shinya Ohmi, Tsuyoshi Fukada, Kunihiko Hara 1987-06-02
4663990 Method for controlling continuously variable transmission Mitsuru Takada 1987-05-12
4659773 Process for preparing amidoalkanesulfonic acids polymers Atsuhiko Nitta, Hideo Kamio 1987-04-21
4655549 Automatic antidazzle semitransparent mirror Yasutoshi Suzuki, Shinya Ohmi, Tsuyoshi Fukada, Kunihiko Hara 1987-04-07
4653353 Spool-type control valve assembly with reduced spool stroke for hydraulic belt-and-pulley type continuously variable transmission Teruo Akashi, Mitsuru Takada 1987-03-31
4654177 Hydroxyalkanesulfonic acids and their derivatives and process for preparing same Atsuhiko Nitta, Hideo Kamio 1987-03-31