YS

Yuji Shima

RI Riken: 8 patents #57 of 1,824Top 4%
Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%
TC Tokusen Kogyo Co.: 1 patents #27 of 68Top 40%
Overall (All Time): #475,689 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12188564 Piston ring, and method for manufacturing same Hiroki Saito, Keiji Honda 2025-01-07
11512777 Piston ring Takashi Kimura 2022-11-29
10502319 Piston ring and its production method 2019-12-10
10227670 Piston ring and its production method 2019-03-12
9617952 Compression ring and its production method Junya Takahashi, Ryouichi Kamon 2017-04-11
9599223 Compression ring and its production method Ryouichi Kamon 2017-03-21
9371797 Piston ring Takuma Sekiya, Yuuichi Murayama, Masayuki Sato, Junya Takahashi, Masaki Moronuki 2016-06-21
9347559 Piston ring Takuma Sekiya, Yuuichi Murayama, Masayuki Sato, Junya Takahashi, Masaki Moronuki 2016-05-24
8597797 Chromium nitride ion-plating coating and its production method, as well as piston ring used for internal combustion engine Takuma Sekiya, Terushige Ueda, Shigeo Inoue 2013-12-03
7098584 Deflection yoke Hidenori Sato, Yasuhiro Torigoe, Masahiro Kamada 2006-08-29