TM

Toshihiro Miyakawa

KC Koyo Seiko Co.: 1 patents #363 of 749Top 50%
NC Nippon Koshuha Steel Co.: 1 patents #3 of 32Top 10%
Overall (All Time): #3,899,072 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4911885 High carbon chromium bearing steel Yoshiaki Hyodo, Masamichi Shibata 1990-03-27