RM

Ryukichi Murai

YK Yoshida Kogyo K.K.: 20 patents #13 of 468Top 3%
YK Ykk: 7 patents #98 of 845Top 15%
📍 Toyama, JP: #106 of 1,699 inventorsTop 7%
Overall (All Time): #147,827 of 4,157,543Top 4%
27
Patents All Time

Issued Patents All Time

Showing 26–27 of 27 patents

Patent #TitleCo-InventorsDate
4839946 Cord lock — 1989-06-20
4562621 Slide fastener stringer Kiyoshi Takeshima, Yoshinori Nakada 1986-01-07