Koji Kaniwa — 7 Patents at Hitachi

Koji Kaniwa has been granted 7 US patents while listed as an inventor at Hitachi. The first was granted in 1987 and the most recent in October 2025. Koji Kaniwa ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Koji Kaniwa in Kyoto, JP.

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Showing 1–7 of 7 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12436613	Image display device and image display method	Yasunobu Hashimoto, Yoshinori Okada, Hiroyoshi Akiyama, Nobuo Masuoka, Nobuaki Kabuto	2025-10-07
12294814	Watching monitoring device and watching monitoring method	Masuo Oku	2025-05-06
12153734	Image display device and image display method	Yasunobu Hashimoto, Yoshinori Okada, Hitoshi Akiyama, Nobuo Masuoka, Nobuaki Kabuto	2024-11-26
8406100	Optical disc device and tracking servo control circuit therefor	Hiroharu Sakai, Hajime Nishimura	2013-03-26
8315131	Optical disc apparatus and back off control method for objective lens	Akihiro Ashida, Jinya Ikeda, Satoru Moriya	2012-11-20
4769722	Apparatus for recording and reproducing a video signal and for recording and reproducing a PCM audio signal on forward and reverse tape travelling directions	Shigeyuki Itoh, Yoshizumi Watatani, Akira Shibata	1988-09-06	$92,000
4677645	Audio signal transmission system having noise reduction means	Yoshizumi Watatani, Shigeyuki Itoh	1987-06-30	$94,000

Koji Kaniwa — 7 Patents

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