YT

Yasushi Tokunaga

RC Riken Vinyl Industry Co.: 2 patents #3 of 24Top 15%
RT Riken Technos: 1 patents #38 of 69Top 60%
Overall (All Time): #1,610,238 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6566447 Resin composition and resin sheet Takafumi Nozawa, Etsushi Fukunaga, Yasunori Yamada, Motohiro Shimizu 2003-05-20
6433081 Resin composition and resin sheet Takafumi Nozawa, Etsushi Fukunaga, Yasunori Yamada, Motohiro Shimizu 2002-08-13
6183842 Decorative laminated sheet Motohiro Shimizu 2001-02-06