RI

Ryozo Isomura

SI Sankin Industry: 1 patents #1 of 6Top 20%
SI Sumitomo Metal Industries: 1 patents #16 of 89Top 20%
Overall (1989): #59,844 of 140,708Top 45%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4824373 Swaged metal denture base Minoru Okada, Yoshiaki Shida, Tomio Nishikawa, Isamu Kato, Kazuyuki Nakano 1989-04-25