Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
KI

Kenji Ito — 229 Patents

NTNtn: 26 patents #42 of 1,364Top 4%
Ngk Spark Plug Co.: 21 patents #55 of 1,594Top 4%
Canon: 19 patents #3,489 of 19,416Top 20%
FUFujifilm: 18 patents #451 of 4,519Top 10%
Fujitsu Limited: 18 patents #1,600 of 24,456Top 7%
KCKonishiroku Photo Industry Co.: 8 patents #101 of 894Top 15%
Denso: 8 patents #1,668 of 11,792Top 15%
Kabushiki Kaisha Toshiba: 7 patents #4,328 of 21,451Top 25%
OKOkuma: 6 patents #28 of 233Top 15%
Sumitomo Electric Industries: 6 patents #4,612 of 21,551Top 25%
SSSumitomo Wiring Systems: 6 patents #599 of 2,615Top 25%
TKToshiba Tec Kabushiki Kaisha: 6 patents #475 of 1,664Top 30%
ATAutonetworks Technologies: 6 patents #276 of 1,079Top 30%
SESeiko Epson: 5 patents #2,973 of 7,774Top 40%
Toyota: 5 patents #5,736 of 26,838Top 25%
OTOkuma Tekkosho: 5 patents #4 of 43Top 10%
Mitsubishi Electric: 5 patents #5,859 of 25,717Top 25%
NLNoritake Co., Limited: 4 patents #23 of 334Top 7%
TCToagosei Chemical Industry Co.: 4 patents #6 of 115Top 6%
NONof: 4 patents #63 of 561Top 15%
U-U-Shin: 3 patents #7 of 73Top 10%
DCDonaldson Company: 3 patents #297 of 695Top 45%
Hitachi: 3 patents #10,718 of 28,497Top 40%
Yamaha: 3 patents #738 of 2,001Top 40%
SCShin-Etsu Chemical Co.: 2 patents #1,026 of 2,176Top 50%
HKHenkel Ag & Co. Kgaa: 2 patents #741 of 2,331Top 35%
Honda Motor Co.: 2 patents #8,527 of 21,052Top 45%
JDJapan Display: 2 patents #741 of 1,204Top 65%
TLToyota Central R&D Labs: 2 patents #528 of 1,657Top 35%
SLSemiconductor Energy Laboratory: 2 patents #830 of 1,113Top 75%
SCSumitomo Chemical: 2 patents #1,792 of 4,033Top 45%
TOThe New Industry Research Organization: 2 patents #1 of 29Top 4%
TCToagosei Co.: 2 patents #80 of 338Top 25%
TCToyoda Gosei Co.: 2 patents #900 of 2,296Top 40%
UIUbe Industries: 2 patents #593 of 1,686Top 40%
UCUbe-Nitto Kasei Co.: 2 patents #17 of 70Top 25%
TIToyota Industries: 2 patents #892 of 955Top 95%
SCShin-Etsu Handotai Co.: 1 patents #385 of 679Top 60%
SLShiseido Company, Limited: 1 patents #543 of 1,112Top 50%
Yamaha Motor: 1 patents #1,283 of 2,310Top 60%
MPMitsubishi Plastics: 1 patents #71 of 168Top 45%
MCMarol Co.: 1 patents #5 of 9Top 60%
FIFujimi Incorporated: 1 patents #125 of 216Top 60%
KUKyushu University: 1 patents #77 of 186Top 45%
FCFuji Seiki Co.: 1 patents #3 of 15Top 20%
TCTokyo Rope Mfg. Co.: 1 patents #38 of 144Top 30%
JTJapan Tobacco: 1 patents #582 of 1,187Top 50%
YAYazaki: 1 patents #2,179 of 3,427Top 65%
FLFujitsu Semiconductor Limited: 1 patents #612 of 1,301Top 50%
DCDaifuku Co.: 1 patents #230 of 509Top 50%
ACAsahi Kasei Kogyo Co.: 1 patents #565 of 1,395Top 45%
NCNkg Spark Plug Co.: 1 patents #1 of 15Top 7%
NLNissei Limited: 1 patents #25 of 53Top 50%
NCNippon Steel Chemical Co.: 1 patents #136 of 380Top 40%
MCMitsui Chemicals: 1 patents #1,270 of 2,279Top 60%
FLFujitsu Microelectronics Limited: 1 patents #212 of 624Top 35%
SESemitec: 1 patents #6 of 17Top 40%
SCShimizu Construction Co.: 1 patents #112 of 352Top 35%
ACAgc Seimi Chemical Co.: 1 patents #22 of 38Top 60%
Overall (All Time): #2,489 of 4,157,543Top 1%
229 Patents All Time
Kenji Ito has been granted 229 US patents while listed as an inventor at Ntn. The first was granted in 1980 and the most recent in June 2025. Kenji Ito ranks #2,489 of 4,157,543 US inventors in our database (top 0.06%). Patent records list Kenji Ito in Dressendorf, MH, DE.

Issued Patents All Time

Showing 1–25 of 229 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12319665 Functionalized α-angelica lactone monomers and polymers obtained therefrom Andreas Taden, Horst Beck, Adrian Brandt, Johannes Gerardus De Vries, Arianna Savini +1 more 2025-06-03
12216391 Projector with rotatable projection lens Masaru Amano, Yukiko Nagatoshi, Hironobu Kayano 2025-02-04
12045403 Operation knob apparatus Akira Nagoshi 2024-07-23
11972880 Wire waterproof structure Yusaku Maeda, Takashi Takada 2024-04-30
11899346 Projector with rotatable projection lens Masaru Amano, Yukiko Nagatoshi, Hironobu Kayano 2024-02-13
11860346 Lens, zoom lens, and imaging lens Toshio Sasaki, Masayasu Konishi, Michio Cho 2024-01-02
11697643 Use of functionalized alpha-angelica lactones Andreas Taden 2023-07-11
11614232 Attachment structure of glow plug with combustion pressure sensor and glow plug with combustion pressure sensor Shoichi Takemoto, Nobuyuki Abe 2023-03-28
11506958 Projector Masaru Amano, Yukiko Nagatoshi, Hironobu Kayano 2022-11-22
11249505 Operation knob device Takuya Nishimoto, Nobuo Tsubokura, Kaoru Taketa 2022-02-15
11194235 Projector Masaru Amano, Yukiko Nagatoshi, Hironobu Kayano 2021-12-07
11181993 Operation knob device Takuya Nishimoto, Nobuo Tsubokura, Kaoru Taketa 2021-11-23
11119393 Projector Masaru Amano, Yukiko Nagatoshi, Hironobu Kayano 2021-09-14
11079576 Lens, zoom lens, and imaging lens Toshio Sasaki, Masayasu Konishi, Michio Cho 2021-08-03
11061307 Projection optical system and projector Masaru Amano, Yukiko Nagatoshi, Hironobu Kayano 2021-07-13
10876851 Environment adjustment system, environment adjustment method, and environment adjustment program Satoshi Iwai, Koji Yamada, Marie Ishikawa, Akinori Sato, Hiroyuki Yamada +5 more 2020-12-29 $880,000
10830862 Position measuring system including a server and a plurality of beacons Shigeo Uchida, Akihiko Fujiwara 2020-11-10
10777989 Waterproofing structure for core wire exposed portion of electrical wire Takao Fukuda, Takashi Takada, Yusaku Maeda 2020-09-15
10667550 Filter for cigarette product and cigarette product Yu Ninomiya, Tomiharu Nagata, Hiroyuki Torai, Sadao Ogi, Kazumasa ARAE 2020-06-02
10597476 Anticorrosive, terminal-attached covered electric wire, and wiring harness Shigeyuki Tanaka, Hironobu RACHI, Naoyuki OSHIUMI, Takashi Takada 2020-03-24
10506364 Positioning device and program Akihiko Fujiwara, Shigeo Uchida 2019-12-10
10463185 Draining rack for cleaning sponge 2019-11-05
10404956 Head-up display emitting light of different colors from a plurality of light sources, and light source control method thereof Daisuke Ito, Koudai FUJITA 2019-09-03
10302941 Projection-type display device, safe-driving support method, and safe-driving support program Koudai FUJITA, Daisuke Ito 2019-05-28
10290396 Wiring harness having waterproofing agent with reactive adhesive Tatsuya Hase, Kazuo Nakashima, Kohei Kobayashi 2019-05-14