Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863530 | Fc-Pt-Nb permanent magnet with an ultra-high coercive force and a large maximum energy product, and method for producing the same | Hakaru Masumoto, by Hiroshi Matushima, executor | 1989-09-05 |
| 4816424 | Method of producing semiconductor device having multilayer conductive lines | Tohru Takeuchi, Hideaki Ohtake, Ichiro Fujita | 1989-03-28 |
| 4814027 | Fe-Pt-Nb permanent magnet with an ultra-high coercive force and a large maximum energy product | Hakaru Masumoto, Hiroshi Matushima, executor | 1989-03-21 |
| D299610 | Pipe wrench | — | 1989-01-31 |