Ryuji Kishihara — 7 Patents at Suncall

Ryuji Kishihara has been granted 7 US patents while listed as an inventor at Suncall. The first was granted in 2009 and the most recent in August 2023. Ryuji Kishihara ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Ryuji Kishihara in Kyoto, JP.

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
11719298	Coil spring	Seiji Okamura	2023-08-08
11499600	Coil spring	Seiji Okamura	2022-11-15
11181160	Coil spring	Seiji Okamura	2021-11-23
11131356	Coil spring	Seiji Okamura	2021-09-28	$1,179,000
9782819	Spiral spring manufacturing method	Naoya Wada, Keiichiro Teratoko	2017-10-10
9400026	Spiral spring	Naoya Wada, Keiichiro Teratoko, Akio Kidooka, Yuu Yokoyama, Akira Hori	2016-07-26
7556011	Valve structure for internal combustion	Keiichiro Teratoko, Tadashi Saito, Takao Suzuki, Futoshi Fujiwara	2009-07-07	$4,371,000

Ryuji Kishihara — 7 Patents

Issued Patents All Time

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