Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6498231 | Vinylpyrrolidone polymer and its stabilization and preservation processes | Toshiaki Kuriyama, Tomiyasu Ueta, Akio Naka, Hideyuki Nishibayashi, Yoshitomo Nakata | 2002-12-24 |
| 6391994 | Production process for vinylpyrrolidone polymer | Nobuyuki Harada, Akio Naka, Toshiaki Kuriyama, Yuuji Shimasaki, Hideyuki Nishibayashi | 2002-05-21 |
| 6346600 | Vinylpyrrolidone polymer and its stabilization and preservation processes | Toshiaki Kuriyama, Tomiyasu Ueta, Akio Naka, Hideyuki Nishibayashi, Yoshitomo Nakata | 2002-02-12 |
| 5728770 | Surface treatment composition and surface-treated resin molding | Tetsuya Yamamoto, Akio Naka, Yukiko Hori, Tadahiro Yoneda | 1998-03-17 |
| 5683501 | Compound fine particles and composition for forming film | Shigefumi Kuramoto, Satoshi Ishida, Tadahiro Yoneda, Masaya Yoshida, Ichiro Namura | 1997-11-04 |