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

Junji Ishikawa — 26 Patents

Canon: 18 patents #3,699 of 19,416Top 20%
NCNippondenso Co.: 8 patents #238 of 3,479Top 7%
Moriya, JP: #27 of 174 inventorsTop 20%
Overall (All Time): #150,017 of 4,157,543Top 4%
26 Patents All Time
Junji Ishikawa has been granted 26 US patents while listed as an inventor at Canon. The first was granted in 1988 and the most recent in July 2023. Junji Ishikawa ranks #150,017 of 4,157,543 US inventors in our database (top 3.6%). Patent records list Junji Ishikawa in Moriya, JP.

Issued Patents All Time

Showing 1–25 of 26 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11693344 Fixing belt unit and fixing device Takeshi Kinoshita 2023-07-04
10852672 Power supply device and image forming apparatus 2020-12-01 $28,000
10698358 Power supply apparatus and image forming apparatus having adjusted load power 2020-06-30 $30,000
10444677 Image forming apparatus with fixing device, the image forming apparatus controlling supply of power to a heater by a driver based on an output of a temperature detector Hiroki Uzawa 2019-10-15 $17,000
10423116 Power supply apparatus and image forming apparatus having adjusted load power 2019-09-24 $20,000
10168655 Image forming apparatus including electric storage portion 2019-01-01
9411279 Image forming and fixing apparatuses having fixing and pressing rotating member and rectification element 2016-08-09 $32,000
8768192 Fixing apparatus of induction heating type for fixing image formed on sheet 2014-07-01 $47,000
8515297 Serial communication apparatus and image forming apparatus including the same 2013-08-20 $50,000
8461497 Power supply circuitry for inductive heating element and capable of minimizing losses to switching element 2013-06-11 $78,000
8068756 Image forming apparatus and control method 2011-11-29 $176,000
8023841 Fixing controller and image forming apparatus 2011-09-20 $169,000
7865097 Image forming apparatus and control method 2011-01-04 $125,000
7825357 Power supply, image forming apparatus, and electric current supply method 2010-11-02 $277,000
7573007 Power supply, image forming apparatus, and electric current supply method 2009-08-11 $556,000
7158733 Image forming apparatus which includes an image bearing body surface potential detection feature Koji Doi, Ryuta Mine 2007-01-02
7042591 Image exposure apparatus and image forming apparatus Katsuyuki Yamazaki, Toshiyuki Sekiya, Mitsuo Shiraishi 2006-05-09 $527,000
6498356 LED chip, LED array chip, LED array head and image-forming apparatus Toshiyuki Sekiya, Mitsuo Shiraishi, Ryuta Mine 2002-12-24 $233,000
5965211 Electroless copper plating solution and process for formation of copper film Koji Kondo, Seiji Amakusa, Katuhiko Murakawa, Katsuaki Kojima, Nobumasa Ishida +1 more 1999-10-12
5248853 Semiconductor element-mounting printed board Nobumasa Ishida, Kaoru Nomoto 1993-09-28
5039338 Electroless copper plating solution and process for formation of copper film Koji Kondo, Seiji Amakusa, Katuhiko Murakawa, Katsuaki Kojima, Nobumasa Ishida +1 more 1991-08-13
4956014 Electroless copper plating solution Koji Kondo, Katuhiko Murakawa, Kaoru Nomoto, Futoshi Ishikawa, Nobumasa Ishida 1990-09-11
4935267 Process for electrolessly plating copper and plating solution therefor Koji Kondo, Katuhiko Murakawa, Nobumasa Ishida, Kaoru Nomoto, Futoshi Ishikawa 1990-06-19
4814009 Electroless copper plating solution Koji Kondo, Katuhiko Murakawa, Kaoru Nomoto, Futoshi Ishikawa, Nobumasa Ishida 1989-03-21
4812897 Semiconductor element sealing structure Ryoichi Narita, Toshio Sonobe, Hitoshi Ito, Osamu Takenaka, Junji Sugiura 1989-03-14