YY

Yosinobu Yamaguchi

SD Showa Denko: 1 patents #231 of 593Top 40%
YC Yamaguchi Seiken Kogyo Co.: 1 patents #7 of 10Top 70%
Overall (All Time): #3,903,895 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4929257 Abrasive composition and process for polishing Kunihiro Miyazaki, Ken Ishitobi 1990-05-29