Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
TM

Tsuneo Maruyama

DIDiamet: 25 patents #1 of 33Top 4%
MMMitsubishi Materials: 4 patents #258 of 1,543Top 20%
TCToray Silicone Co.: 3 patents #33 of 116Top 30%
Denso: 2 patents #4,986 of 11,792Top 45%
ACAsmo Co.: 2 patents #218 of 745Top 30%
MIMitsubishi Cable Industries: 1 patents #162 of 372Top 45%
MPMitsubishi Materials Pmg: 1 patents #4 of 15Top 30%
MCMitsui Mining & Smelting Co.: 1 patents #444 of 838Top 55%
Overall (All Time): #105,503 of 4,157,543Top 3%
33 Patents All Time

Issued Patents All Time

Showing 26–33 of 33 patents

Patent #TitleCo-InventorsDate
7361203 Sliding component and method for manufacturing the same Teruo Shimizu 2008-04-22
7211219 Oil-impregnant sintered bearing and manufacturing method thereof, and motor Junichi Iguchi, Kenji Nishio, Tooru Itoh, Takeshi Tanaka 2007-05-01
6599018 Oil-impregnant sintered bearing and manufacturing method thereof, and motor Junichi Iguchi, Kenji Nishio, Tooru Itoh, Takeshi Tanaka 2003-07-29
6524365 Bearing made of graphite-dispersed copper-based sintered alloy and motorized fuel pump using this bearing Noboru Kanezaki, Yoshio Ebihara 2003-02-25
5074968 Method and apparatus for stripping starting sheet Hiroji Akii, Yutaka Kataoka, Kiyotaka Tsuji 1991-12-24
4269753 Siloxane compositions which can be ceramified at high temperatures Katsutoshi Mine, Kazuhide Takeshita 1981-05-26
4269757 Siloxane compositions which form ceramics at high temperatures Katsutoshi Mine, Kazuhide Takeshita 1981-05-26
4268452 Noncurable sealing materials Katsutoshi Mine, Yoshitaka Kubota 1981-05-19