Yoshihito Ooya

RI Riken: 1 patents #679 of 1,824Top 40%

📍 Gyōda, JP: #357 of 565 inventorsTop 65%

Overall (All Time): #2,946,451 of 4,157,543Top 75%

Patents All Time

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Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
9657838	Combined oil control ring	—	2017-05-23