Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883922 | Composite superconductor and method of the production thereof | Masayuki Nagata, Shigeo Saito, Yuichi Yamada | 1989-11-28 |
| 4851121 | Process for rendering porous membrane hydrophilic | Hiroshi Kawasaki | 1989-07-25 |