Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Akihiro Ito — 95 Patents

CKCkd: 18 patents #6 of 332Top 2%
MAMakita: 10 patents #121 of 770Top 20%
NSNidec Sankyo: 10 patents #39 of 291Top 15%
FIFujifilm Business Innovation: 9 patents #1,261 of 5,238Top 25%
Mitsubishi Electric: 9 patents #3,275 of 25,717Top 15%
SPSeiko Precision: 8 patents #18 of 173Top 15%
Toyota: 5 patents #5,736 of 26,838Top 25%
ECEbara Refrigeration Equipment & Systems Co.: 4 patents #2 of 17Top 15%
HOHoya: 3 patents #406 of 1,290Top 35%
EBEbara: 3 patents #598 of 1,611Top 40%
NCNippon Paper Industries Co.: 2 patents #176 of 535Top 35%
MMMitsubishi Mining: 2 patents #467 of 2,247Top 25%
KUKyoto University: 2 patents #286 of 1,688Top 20%
Hitachi: 2 patents #13,405 of 28,497Top 50%
MCMitsubishi Chemical: 2 patents #1,090 of 3,022Top 40%
ELEdwards Japan Limited: 2 patents #25 of 79Top 35%
Canon: 2 patents #12,732 of 19,416Top 70%
NINikon: 1 patents #1,647 of 2,493Top 70%
Brother Kogyo: 1 patents #2,155 of 2,767Top 80%
REResonac: 1 patents #191 of 474Top 45%
NENec Electronics: 1 patents #715 of 1,789Top 40%
SSSankyo Seiki Seisakusho: 1 patents #122 of 287Top 45%
OHOji Holdings: 1 patents #74 of 176Top 45%
NDNec Compound Semiconductor Devices: 1 patents #19 of 87Top 25%
NCNippon Leakless Industry Co.: 1 patents #22 of 67Top 35%
TKToyoda Koki Kabushiki Kaisha: 1 patents #307 of 674Top 50%
Overall (All Time): #16,077 of 4,157,543Top 1%
95 Patents All Time
Akihiro Ito has been granted 95 US patents while listed as an inventor at Ckd. The first was granted in 1989 and the most recent in April 2025. Akihiro Ito ranks #16,077 of 4,157,543 US inventors in our database (top 0.39%). Patent records list Akihiro Ito in Chiba, MH, JP.

Patents per Year

Patents granted per year, 1989 to 2025Bar chart with a peak of 11 patents in 2023.peak 111989: 2 patents19891995: 1 patents1997: 3 patents1999: 2 patents19992001: 1 patents2002: 1 patents2003: 1 patents20032004: 4 patents2005: 3 patents2006: 1 patents20062008: 1 patents2009: 3 patents2010: 6 patents20102011: 7 patents2012: 3 patents2013: 3 patents20132014: 4 patents2015: 4 patents2016: 6 patents20162018: 5 patents2019: 4 patents2020: 4 patents20202021: 4 patents2022: 3 patents2023: 11 patents20232024: 5 patents2025: 3 patents2025

Issued Patents All Time

Showing 1–25 of 95 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12264037 Sheet conveyance apparatus and image forming apparatus 2025-04-01
12196500 Heat exchange system Takahiro Minatani, Shinichi Nitta 2025-01-14
12188566 Four-way valve, valve unit, temperature control system Hiroki Doi, Masaya Yamauchi, Masayuki Kouketsu 2025-01-07
12133147 Message transfer apparatus and method, and computer-readable medium Yusei TANAKA, Keiichi KAMIKAWA 2024-10-29
12077030 Control device, vehicle, and control method Toshinari OGAWA, Kohta Tarao, Shinya Kijima, Osamu Fukawatase, Koji Yasui +5 more 2024-09-03 $1,550,000
12023744 Drilling tool Hikaru SUNABE 2024-07-02
11915681 Information processing device and control method Satoru Furuta 2024-02-27
11878403 Rotary tool Hikaru SUNABE 2024-01-23
11850910 Control device, vehicle, and control method Toshinari OGAWA, Kohta Tarao, Shinya Kijima, Osamu Fukawatase, Koji Yasui +5 more 2023-12-26 $1,652,000
11796247 Temperature control system Norio Kokubo, Masayuki Kouketsu, Isahiro Hasegawa, Toshiharu Nakazawa, Keisuke Takanashi +1 more 2023-10-24
11788777 Temperature control system and integrated temperature control system Norio Kokubo, Masayuki Kouketsu, Isahiro Hasegawa, Toshiharu Nakazawa, Keisuke Takanashi +1 more 2023-10-17
11787913 Sizing agent for carbon fibers, aqueous dispersion of sizing agent for carbon fibers, and sizing agent-adhered carbon fiber bundle Kenji Kaneta, Takaaki Suzuki, Kouki Wakabayashi, Naoki Sugiura 2023-10-17 $188,000
11760382 Information processing device, information processing method, and system Mitsuyoshi Ohno, Daiki Kubo, Yosuke Nozaki, Tsukasa Nakanishi, Hironori Aoyama +16 more 2023-09-19 $610,000
11731708 Facility, provision method, and provision system Toshinari OGAWA, Kohta Tarao, Shinya Kijima, Osamu Fukawatase, Koji Yasui +5 more 2023-08-22 $519,000
11703284 Temperature control system and integrated temperature control system Norio Kokubo, Masayuki Kouketsu, Isahiro Hasegawa, Toshiharu Nakazawa, Keisuke Takanashi +1 more 2023-07-18
11656016 Cooling system that comprises multiple cooling apparatus and reduces power consumption Norio Kokubo, Masayuki Kouketsu, Isahiro Hasegawa, Toshiharu Nakazawa, Keisuke Takanashi +1 more 2023-05-23
11639426 Heat conduction sheet, method of manufacturing heat conduction sheet, and heat dissipating device Michiaki Yajima, Mika KOBUNE, Takahiro Ikabata 2023-05-02
11579570 Servo control device, servo control method and servo control system 2023-02-14
11566723 Flow path switching valve and manufacturing method therefor Masayuki Kouketsu, Keiichi Nishikawa, Yasuhisa Hirose, Takahiro Minatani 2023-01-31
11403670 Information processing device, information processing system, and information processing method for collecting information related to advertisement activity Toshinari OGAWA, Kohta Tarao, Shinya Kijima, Osamu Fukawatase, Koji Yasui +5 more 2022-08-02 $719,000
11268628 Electromagnetic actuator Masayuki Kouketsu, Masaya Yamauchi, Toshikazu Tsuruga 2022-03-08
11241786 Servo control device, robot, and servo control method Shunya Yazawa 2022-02-08
11209203 Ice making device Shunji Saito, Takaji Harata 2021-12-28
10915072 Servo control device, servo control method and servo control system 2021-02-09
10907748 Flow path switching valve and manufacturing method therefor Masayuki Kouketsu, Keiichi Nishikawa, Yasuhisa Hirose, Takahiro Minatani 2021-02-02