OO

Osamu Oka

TC Tomoeagawa Paper Co.: 2 patents #5 of 33Top 20%
UN Unknown: 1 patents #172 of 2,033Top 9%
Overall (1994): #23,509 of 165,921Top 15%
2
Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5336374 Composite comprising paper and electro-conducting polymers and its production process Katsumi Yoshino 1994-08-09
5304613 Polyaniline derivative containing at least a 2-butenylene structure 1994-04-19