RK

Ryoji Kojima

SI Sumitomo Rubber Industries: 2 patents #43 of 236Top 20%
📍 Tochigi, MA: #4 of 5 inventorsTop 80%
Overall (2018): #106,830 of 503,207Top 25%
2
Patents 2018

Issued Patents 2018

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10071598 Studless winter tire 2018-09-11
9879109 Rubber composition for tires, tire member, and pneumatic tire Yuka Yokoyama, Masafumi Yoshino 2018-01-30