TY

Toshihiro Yamaoka

TC Tpr Co.: 1 patents #46 of 92Top 50%
Overall (All Time): #2,555,065 of 4,157,543Top 65%
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Patent #TitleCo-InventorsDate
12173799 Oil control ring Akira Hikone, Takashi Oguro, Noriaki Ayuzawa, Naoki Umeda 2024-12-24