ET

Etuo Tamegai

ST Stt: 2 patents #3 of 16Top 20%
NC Nippon Piston Ring Co.: 1 patents #120 of 208Top 60%
Overall (All Time): #2,083,391 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
8181968 Piston ring Hiromi Ishikawa, Tomotaka Kariya, Makoto Tsuruta 2012-05-22
8088496 Piston ring Tomotaka Kariya, Hiromi Ishikawa, Makoto Tsuruta 2012-01-03