Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5614149 | Stainless steels for coins and method of producing coins of stainless steel | Hiroshi Abe, Masaomi Tsuda, Yoshito Fujiwara | 1997-03-25 |
| 5325911 | Method of producing Fe-Ni series alloys having improved effect for restraining streaks during etching | Masaomi Tsuda | 1994-07-05 |
| 5002619 | Method of producing Fe-Ni series alloys having improved effect for restraining streaks during etching | Masaomi Tsuda | 1991-03-26 |
| 4808371 | Exterior protective member made of austenitic stainless steel for a sheathing heater element | Rikio Nemoto, Yoshito Fujiwara | 1989-02-28 |