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Minoru Ishijima — 35 Patents

NTNtn: 26 patents #42 of 1,364Top 4%

NCNippon Seiko Co.: 3 patents #40 of 315Top 15%

Delphi Technologies: 2 patents #1,417 of 4,124Top 35%

NONok: 2 patents #242 of 725Top 35%

Nsk: 2 patents #645 of 1,559Top 45%

Sony: 1 patents #17,321 of 25,231Top 70%

KCKyodo Yushi Co.: 1 patents #63 of 191Top 35%

JEJxtg Nippon Oil & Energy: 1 patents #48 of 112Top 45%

Iwata, JP: #21 of 782 inventorsTop 3%

Overall (All Time): #96,288 of 4,157,543Top 3%

35 Patents All Time

Minoru Ishijima has been granted 35 US patents while listed as an inventor at Ntn. The first was granted in 1989 and the most recent in November 2025. Minoru Ishijima ranks #96,288 of 4,157,543 US inventors in our database (top 2.3%). Patent records list Minoru Ishijima in Iwata, JP.

Patents per Year

Issued Patents All Time

Showing 1–25 of 35 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12460680	Tripod type constant velocity universal joint	Taku Itagaki, Tatsuro Sugiyama	2025-11-04
11767876	Power transmission shaft	Taku Itagaki	2023-09-26
10829714	Grease composition for constant velocity joints, and constant velocity joint in which same is sealed	Takashi Arai, Yasuha Tokumo, Takeyoshi Konomoto	2020-11-10
10731681	Boot band	Shingo Yoshinaga	2020-08-04
10443647	Power transmission shaft	Taku Itagaki, Yuichi Asano, Tomoshige Kobayashi, Takeyoshi Konomoto	2019-10-15
9243671	Fixed type constant velocity universal joint	Tomoshige Kobayashi, Kisao Yamazaki, Aiko Ishikawa	2016-01-26
8783964	Bearing device for driving wheel	Hiroshi Teduka, Manabu Hoshino, Kazuhiro Muramatsu	2014-07-22
8684850	Constant velocity universal joint	Yoshinori Terasaka, Tomoshige Kobayashi, Kisao Yamazaki	2014-04-01
8591118	Bearing device for driving wheel	Hiroshi Teduka, Manabu Hoshino, Kazuhiro Muramatsu	2013-11-26
8529360	Outer joint member for fixed constant velocity universal joint	Masazumi Kobayashi, Kisao Yamazaki	2013-09-10
8499457	Fixed constant velocity universal joint, method of manufacturing fixed constant velocity universal joint, and bearing device adapted for use in driving wheel and using fixed constant velocity universal joint	Masazumi Kobayashi, Kisao Yamazaki	2013-08-06
8342972	Steering joint	Kenta Yamazaki	2013-01-01
8162764	Constant velocity universal joint	Kenta Yamazaki	2012-04-24
8052536	Boot for universal joint	Hiroyuki Satoh, Kenta Yamazaki	2011-11-08
8026974	Imaging apparatus, method and program	—	2011-09-27	$209,000
7955179	Boot for universal joint	Hiroyuki Satoh, Kenta Yamazaki	2011-06-07
7910526	Grease composition for constant velocity joint and constant velocity joint containing the composition sealed therein	Mitsuhiro Kakizaki, Takashi Okaniwa, Shinichi Takabe	2011-03-22
7810407	Fixed type constant velocity joint	Kenta Yamazaki	2010-10-12	$641,000
7771282	Fixed type constant velocity universal joint	Kenta Yamazaki	2010-08-10	$270,000
7708644	Tripod constant velocity universal joint	Junichi Izumino	2010-05-04	$275,000
7704149	Fixed type constant velocity joint	Kenta Yamazaki	2010-04-27	$205,000
7682253	Tripod type constant velocity joint	Kenta Yamazaki, Junichi Izumino	2010-03-23	$1,087,000
7654908	Tripod type constant velocity universal joint	Junichi Izumino	2010-02-02	$480,000
7568977	Shaft for constant velocity universal joint	Kenta Yamazaki	2009-08-04	$1,211,000
7473181	Tripod type constant velocity universal joint	Junichi Izumino	2009-01-06	$614,000