Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5817423 | PTC element and process for producing the same | Hiroshi Kajimaru, Keiichi Asami, Yoshiaki Echigo, Akira Ito | 1998-10-06 |
| 5721031 | Fiber-reinforced porous plastic tube | Yoshiaki Echigo, Kiyotaka Nakanishi | 1998-02-24 |
| 5719253 | Poly(amic acid) solution and polyimide film or polymide-coated material obtained therefrom | Yoshiaki Echigo, Shoji Okamoto, Hiroshi Yamada, Isao Tomioka | 1998-02-17 |
| 5648027 | Porous carbonaceous material and a method for producing the same | Hiroyuki Tajiri, Yoshiteru Nakagawa, Yoshiharu Tanaka, Keiichi Asami, Katsuyuki Touma +1 more | 1997-07-15 |
| 5510395 | Film forming solution, porous film obtained therefrom and coated material with the porous film | Isao Tomioka, Minoru Saito, Hiroshi Yamada, Yoshiaki Echigo | 1996-04-23 |
| 5504148 | Aliphatic polyesters and method of preparing the same | Katsuyuki Mukai, Masatoshi Kawanishi, Minoru Nishinohara | 1996-04-02 |