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USPTO Patent Rankings Data through Dec 31, 2025
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Yoichi Ishikawa — 24 Patents

ABAble: 6 patents #1 of 27Top 4%
Ricoh Company: 3 patents #4,832 of 9,818Top 50%
MCMaruyama Mfg. Co.: 3 patents #8 of 40Top 20%
MMMitsubishi Materials: 3 patents #352 of 1,543Top 25%
NCNidec Copal: 2 patents #55 of 172Top 35%
OCOriental Yeast Co.: 2 patents #22 of 160Top 15%
NUNational University Corporation Nagoya University: 1 patents #247 of 782Top 35%
OSOriental Sangyo: 1 patents #2 of 4Top 50%
SUSubaru: 1 patents #819 of 1,684Top 50%
TCTokyo Gas Co.: 1 patents #144 of 412Top 35%
KCKyosan Electric Mfg. Co.: 1 patents #28 of 57Top 50%
MEMitsubishi Heavy Industries Aero Engines: 1 patents #24 of 56Top 45%
UNUnknown: 1 patents #29,356 of 83,584Top 40%
ISIshikawa Seisakusho: 1 patents #7 of 32Top 25%
Tokyo, JP: #5,997 of 90,295 inventorsTop 7%
Overall (All Time): #168,038 of 4,157,543Top 5%
24 Patents All Time
Yoichi Ishikawa has been granted 24 US patents while listed as an inventor at Able. The first was granted in 1983 and the most recent in November 2025. Yoichi Ishikawa ranks #168,038 of 4,157,543 US inventors in our database (top 4.0%). Patent records list Yoichi Ishikawa in Tokyo, JP.

Issued Patents All Time

Showing 1–24 of 24 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12466385 Control apparatus for hybrid vehicle — 2025-11-11
11162445 Vehicle Masaki Komuro, Shuta Takeda, Tetsu MATSUZAKI 2021-11-02
11075497 Laser device and internal combustion engine Kentaroh Hagita, Naoto Jikutani, Toshiyuki Ikeoh, Yuzuru Sasaki, Yusuke Okura 2021-07-27
10480427 Choke valve structure Terutaka Yasuda, Toshihisa Nemoto 2019-11-19
10300539 Rotating-cutting-edge-type milling tool and cutting method using same Eiji Shamoto, Norikazu Suzuki, Yu Hasegawa, Nobukazu Horiike 2019-05-28
10085390 Backpack type blowing apparatus — 2018-10-02
D806330 Backpack blower Keiichi Moriya 2017-12-26
8888977 Combination electrode for ion concentration measurement — 2014-11-18
8586025 Method of inhibiting methanogenesis Isami Hatano, Makoto Shoda 2013-11-19
7814325 System, method and computer readable medium for certifying release of electronic information on an internet Yoichi Kanai, Masuyoshi Yachida, Tomio Mizuno, Tatsuya Furukawa 2010-10-12
7143144 System, method and computer readable medium for certifying release of electronic information on an internet Yoichi Kanai, Masuyoshi Yachida, Tomio Mizuno, Tatsuya Furukawa 2006-11-28
7028997 Vibration damping tool Hidebumi Takahashi 2006-04-18
6992840 Photographing lens Hotaka Takeuchi, Yasuhiko Abe 2006-01-31 $464,000
6980369 Zoom lens Hotaka Takeuchi 2005-12-27 $258,000
6777881 Power supply apparatus for generating plasma Itsuo Yuzurihara, Masahiro Kikuchi, Toyoaki Suenaga 2004-08-17
6235189 Method of supplying dissolved carbon dioxide to plants in an aqueous medium — 2001-05-22
6126365 Boring tool Masayuki Okawa, Hidehiko Nagaya, Kazuya Yamazaki 2000-10-03
5794258 System for transmitting figure data within a retrievable range according to the date and time of update Hiroto Sato, Kiyoshi Yoneyama 1998-08-11
5626824 Autoclave Shuji Yokoo, Akira Mizoguchi 1997-05-06
5605611 Carbon dioxide-generating electrode apparatus Sanji Ozawa, Chikara Yokose 1997-02-25
4902962 Detection of the surface of a liquid or foam including moisture inhibiting — 1990-02-20
4579631 Measurement of oxygen concentration Yoshio Iwami 1986-04-01
4460451 Steam-sterilizable carbon dioxide sensor Tomoaki Inoue, Mitsunori Kaneko 1984-07-17
4376681 Method of measuring carbon dioxide in a liquid or gas Tomoaki Inoue, Mitsunori Kaneko 1983-03-15

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Yang Li24
Bo Ching Jiang24
Shoham DEKEL24
David B. Coulter24
Akiko WATANO24
Walter Nistico24
Thomas W. Chalberg, Jr.24
Alan R. Dombrowski24