YK

Yoshio Koyama

TC Teikoku Piston Ring Co.: 1 patents #1 of 1Top 100%
Overall (2005): #71,131 of 245,428Top 30%
1
Patents 2005

Issued Patents 2005

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6951579 Sintered alloy for valve seats, valve seat and manufacturing method thereof — 2005-10-04