Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6833426 | Halogenated aromatic compound, (co)polymer thereof, and proton-conductive membrane comprising same | Yoshitaka Yamakawa, Masayuki Takahashi | 2004-12-21 |
| 6825310 | Halogenated aromatic compound, polymer thereof, and proton-conductive membrane comprising same | Masayuki Takahashi, Yoshitaka Yamakawa, Makoto Higami | 2004-11-30 |
| 6812290 | Polyarylene copolymers and proton-conductive membrane | Yoshitaka Yamakawa, Mayumi Kakuta, Igor Rozhanskii | 2004-11-02 |
| 6794480 | Monomer containing electron-withdrawing group and electron-donative group, and copolymer and proton-conductive membrane comprising same | Masayuki Takahashi, Yoshitaka Yamakawa, Makoto Higami | 2004-09-21 |
| 6685984 | Method for the production of multilayers | Makoto Higami, Yoichi Asano, Ryoichiro Takahashi, Osamu Kakutani, Gen Okiyama | 2004-02-03 |