Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4803452 | Superconductor for magnetic field shielding | Eichi Tada, Hiroaki Toda, Yoshiaki Kawahara | 1989-02-07 |
| 4797646 | Superconductor for magnetic field shielding | Eiichi Tada | 1989-01-10 |