Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5071554 | Flat permeable membrane and method for manufacture thereof | Yukio Seita | 1991-12-10 |
| 4964991 | Flat permeable membrane and for manufacture thereof | Yukio Seita | 1990-10-23 |
| 4927576 | Method for the manufacture of flat permeable membrane | Yukio Seita | 1990-05-22 |
| 4743375 | Flat permeable membrane | Yukio Seita | 1988-05-10 |
| 4708800 | Hollow fiber membrane and method for manufacture thereof | Toshiji Ichikawa, Kazuaki Takahara, Kazuhiro Shimoda, Yukio Seita | 1987-11-24 |