Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5268141 | Iron based alloy having low contents of aluminum silicon, magnesium, calcium, oxygen, sulphur, and nitrogen | Toru Degawa, Kenichi Kusumoto, Makoto Ebata | 1993-12-07 |
| 5225156 | Clean steel composition | — | 1993-07-06 |
| 5055018 | Clean steel | — | 1991-10-08 |
| 4999053 | Method of producing an iron-, cobalt- and nickel-base alloy having low contents of sulphur, oxygen and nitrogen | Toru Degawa, Kanicki Kusumoto, Makoto Ebata | 1991-03-12 |
| 4944798 | Method of manufacturing clean steel | — | 1990-07-31 |
| 4832742 | Flexible refining-agent clad wire for refining molten iron group metal | — | 1989-05-23 |
| 4820485 | Method of producing an iron-, cobalt- and nickel-base alloy having low contents of sulphur, oxygen and nitrogen | Toru Degawa, Kenichi Kusumoto, Makoto Ebata | 1989-04-11 |
| 4729787 | Method of producing an iron; cobalt and nickel base alloy having low contents of sulphur, oxygen and nitrogen | Toru Degawa, Kenichi Kusumoto, Makoto Ebata | 1988-03-08 |
| 4710481 | Method for melting Ti or a high-Ti alloy in CaO refractories | Toru Degawa, Gen Okuyama, Akio Hashimoto, Seiju Uchida, Kouzou Fujiwara +2 more | 1987-12-01 |
| 4698095 | Composite calcium clads for treating molten iron | Yasuji Kataura | 1987-10-06 |
| 4671820 | Composite calcium clads for deoxidation and desulfurization from molten steels | Yasuji Kataura | 1987-06-09 |
| 4484946 | Method of producing iron-, nickle-, or cobalt-base alloy with low contents of oxygen, sulphur, and nitrogen | — | 1984-11-27 |