YK

Yoshifumi Kawakatsu

TC Toho Beslon Co.: 2 patents #11 of 50Top 25%
TC Toho Rayon Co.: 1 patents #21 of 61Top 35%
Overall (All Time): #1,666,703 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4898700 Process for producing preoxidized fibers from acrylic fibers Osamu Yoshinari, Hayashi Takahashi, Hideaki Fukuizumi 1990-02-06
4659623 Acrylic fibers for producing preoxidized fibers Osamu Yoshinari, Hayashi Takahashi, Hideaki Fukuizumi 1987-04-21
4522801 Process for producing carbon fiber or graphite fiber Osamu Yoshinari, Hideaki Fukuizumi 1985-06-11