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

Takashi Takeuchi

HIHitachi: 37 patents #587 of 28,497Top 3%
KTKabushiki Kaisha Toshiba: 19 patents #1,558 of 21,451Top 8%
PAPanasonic: 19 patents #1,080 of 21,108Top 6%
TSToshiba Medical Systems: 15 patents #56 of 1,088Top 6%
TLToyota Central R&D Labs: 12 patents #59 of 1,657Top 4%
Sumitomo Electric Industries: 10 patents #2,734 of 21,551Top 15%
SHShinkawa: 9 patents #33 of 229Top 15%
KAKao: 6 patents #545 of 3,221Top 20%
SESeiko Epson: 6 patents #2,663 of 7,774Top 35%
Canon: 5 patents #9,253 of 19,416Top 50%
Nissan Motor Co.: 4 patents #1,803 of 8,689Top 25%
NINidec: 4 patents #253 of 976Top 30%
HMHitachi Maxell: 4 patents #247 of 1,211Top 25%
TIToyota Industries: 4 patents #358 of 1,610Top 25%
SCSenju Sprinkler Co.: 3 patents #4 of 31Top 15%
AKAsahi Denka Kogyo K.K.: 3 patents #18 of 162Top 15%
HCHitachi Cable: 3 patents #224 of 1,086Top 25%
NENec: 3 patents #4,195 of 14,502Top 30%
OEOtis Elevator: 3 patents #506 of 1,840Top 30%
ALAdaptive Audio Limited: 3 patents #3 of 8Top 40%
SCSumitomo Metal Mining Co.: 3 patents #199 of 736Top 30%
Honda Motor Co.: 2 patents #8,527 of 21,052Top 45%
HCHitachi Ulsi Systems Co.: 2 patents #419 of 867Top 50%
MEMeidensha: 2 patents #147 of 555Top 30%
Brother Kogyo: 2 patents #1,845 of 2,767Top 70%
RERenesas Electronics: 2 patents #1,855 of 4,529Top 45%
Fujitsu Limited: 2 patents #10,930 of 24,456Top 45%
ACAdeka Argus Chemical Co.: 2 patents #24 of 63Top 40%
FUFujifilm: 2 patents #2,431 of 4,519Top 55%
PIPiolax: 1 patents #85 of 198Top 45%
KSKomatsu Shisakusho: 1 patents #409 of 885Top 50%
SCSanyo Electric Co.: 1 patents #3,644 of 6,347Top 60%
SCSaraya Co.: 1 patents #16 of 47Top 35%
KSKabushiki Kaisha Showa Seisakusho: 1 patents #9 of 45Top 20%
JVJvckenwood: 1 patents #386 of 736Top 55%
HIHitachi Video Engineering, Incorporated: 1 patents #69 of 181Top 40%
SHShowa: 1 patents #167 of 337Top 50%
DEDenso: 1 patents #6,940 of 11,792Top 60%
TOToyota: 1 patents #15,335 of 26,838Top 60%
KLKenwood Limited: 1 patents #119 of 319Top 40%
CKCalsonic Kansei: 1 patents #307 of 675Top 50%
VJVictor Company Of Japan: 1 patents #818 of 1,489Top 55%
HNHitachi Information Network: 1 patents #13 of 29Top 45%
HCHitachi Chemical Company: 1 patents #1,071 of 1,946Top 60%
UIUbe Industries: 1 patents #895 of 1,686Top 55%
Overall (All Time): #4,677 of 4,157,543Top 1%
172 Patents All Time

Issued Patents All Time

Showing 151–172 of 172 patents

Patent #TitleCo-InventorsDate
4661234 Air-fuel ratio sensor and apparatus using the same Hideaki Takahashi, Haruyoshi Kondo, Kiyoharu Hayakawa 1987-04-28
4626338 Equipment for detecting oxygen concentration Haruyoshi Kondo, Keiichi Saji 1986-12-02
4611335 Digital data synchronizing circuit Takao Arai, Masaharu Kobayashi, Eiji Okubo, Hiroshi Endoh 1986-09-09
4595485 Limiting electric current type oxygen sensor Hideaki Takahashi, Haruyoshi Kondo, Keiichi Saji, Kiyoharu Hayakawa 1986-06-17
4589290 Torque sensor Jun Sugiyama, Yutaka Nonomura, Kouji Tsukada, Keiichi Shimaoka, Masaharu Takeuchi 1986-05-20
4580255 Servo circuit for a signal reproducing apparatus Shigeki Inoue, Takao Arai, Yukio Fukui, Harushige Nakagaki, Masafumi Nakamura +1 more 1986-04-01
4576705 Apparatus with polarographic sensor to detect concentrations of plurality of gas components Haruyoshi Kondo, Hideaki Takahashi, Keiichi Saji, Kiyoharu Hayakawa 1986-03-18
4577319 Error flag processor Keizo Nishimura, Masaharu Kobayashi, Kazumasa Oiso 1986-03-18
4574264 Thin film oxygen sensor with microheater Hideaki Takahashi, Haruyoshi Kondo, Kiyoharu Hayakawa, Hideaki Muraki 1986-03-04
4532561 Playback speed control system Hiroyuki Kimura, Yoshimi Iso, Shigeki Inoue, Shin-ichi Ohashi 1985-07-30
4530894 Coated magnetic toner powder Tetsuya Imamura, Takashi Tetsutani, Shinichiro Yasuda 1985-07-23
4529649 Magnetic recording medium Shoji Kobayashi, Tsuyoshi Ohtani, Tetusya Imamura 1985-07-16
4528105 Micelle solution compositions for recovering crude oil Hiroshi Ito, Kyusei Hasegawa, Takayuki Ikenaga 1985-07-09
4524264 Temperature control apparatus Hideaki Takahashi, Haruyoshi Kondo 1985-06-18
4510036 Limiting electric current type oxygen sensor with heater and limiting electric current type oxygen concentration detecting device using the same Hideaki Takahashi, Keiichi Saji, Haruyoshi Kondo, Kiyoharu Hayakawa 1985-04-09
4501795 Magnetic recording medium Syoji Kobayashi, Tsuyoshi Ootani, Tetsuya Imamura 1985-02-26
4500412 Oxygen sensor with heater Hideaki Takahashi, Kiyoharu Hayakawa, Haruyoshi Kondo 1985-02-19
4472262 Limiting electric current type oxygen concentration detector applied with temperature compensation Haruyoshi Kondo, Keiichi Saji, Yasuhiro Otsuka, Toshinobu Furutani, Mari Okazaki 1984-09-18
4408326 Circuit for correcting error in digital information signal Harukuni Kobari 1983-10-04
4320276 Dielectric heating device Yoichi Kaneko, Hisato Owatari 1982-03-16
4286935 Earth and sand conveyor system Noboru Okuno, Akihiko Tsuzuku, Masao Tanazawa, Minoru Nakajima, Haruo Imamura 1981-09-01
4187486 Oxygen concentration detecting element and method of producing the same Hideaki Takahashi 1980-02-05