Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5674398 | Composite reverse osmosis membrane | Masahiko Hirose, Masatoshi Maeda | 1997-10-07 |
| 5647894 | Gas separating composite membrane and process for producing the same | Tomomi Ohara, Hisao Hachisuka, Ping Xu, Akira Shimazu | 1997-07-15 |