Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4759780 | Apparatus for concentrating a gas, especially oxygen, from a gaseous mixture using an ultrathin solid membrane | Takeyoshi Yamada, Shizuo Azuma, Kiyoshi Sugie, Teizo Yamaji | 1988-07-26 |
| 4449992 | Heat-and-moisture exchanger | Takeyoshi Yamada, Shizuo Azuma, Shoji Kawase, Makoto Sano | 1984-05-22 |
| 4406673 | Ultrathin solid membrane, process for production thereof, and use thereof for concentrating a specified gas in a gaseous mixture | Takeyoshi Yamada, Shizuo Azuma, Kiyoshi Sugie, Teizo Yamaji | 1983-09-27 |
| 4244859 | Aromatic polyester composition | Kiyoshi Sugie, Shingo Emi, Shizuo Azuma, Toshiaki Harada, Shoji Kawase | 1981-01-13 |