Keizo Kojima — 11 Patents at Canon

Keizo Kojima has been granted 11 US patents while listed as an inventor at Canon. The first was granted in 2001 and the most recent in August 2023. Keizo Kojima ranks #435,149 of 4,157,543 US inventors in our database (top 10.5%). Patent records list Keizo Kojima in Yokohama, JP.

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
11722606	Image forming apparatus	Takashi Odate	2023-08-08
11489974	Image forming apparatus	Takashi Odate	2022-11-01	$36,000
11474458	Image forming apparatus that determines whether or not plurality of rotating bodies are in state of contact	Ryo Matsumura, Keisuke Samejima, Taro Minobe	2022-10-18	$38,000
11258361	Voltage detection apparatus and image forming apparatus	—	2022-02-22	$41,000
11112735	Image forming apparatus	Taro Minobe, Naoki Kanno, Atsushi Nakamoto, Toshihiko Takayama, Hideo Nanataki	2021-09-07	$47,000
10547244	Power supply apparatus and image forming apparatus	Takashi Odate, Atsushi Ohno	2020-01-28	$16,000
10459361	Image forming apparatus with voltage adjustment member	Seiji Saito, Keisuke Ishizumi, Toshihiko Takayama, Masaru Ohno, Shingo Ito +3 more	2019-10-29	$24,000
9300216	Switching power supply and image forming apparatus equipped with switching power supply	—	2016-03-29	$34,000
9274490	Power supply apparatus and image forming apparatus	—	2016-03-01	$23,000
8891997	Power supply system for stopping and starting operation in accordance with input voltage and image forming apparatus including the same	Keisuke Samejima	2014-11-18	$35,000
6183713	Method for producing nitrogen trifluoride by gas-solid reaction	Nobuyuki Tokunaga, Shirou Moroi	2001-02-06

Keizo Kojima — 11 Patents

Issued Patents All Time

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