US3328164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prealloy for the treatment of iron and steel melts
Assignee: GEA Group AG
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Filing: 1963-09-04
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Granted: 1967-06-27
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Expires: 1983-09-04
Abstract
No abstract record available.
Inventors
- 👤 Muhlberger Horst
- 👤 Trager Heiner Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:01
CPC Classifications
C; C22; C22C; C22C9/00; C21; C21C; C21C1/00; C21C1/10; C21C1/105; C22C19/00; C22C28/00; C22C35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PREALLOY ADAPTED FOR THE TREATMENT OF IRON AND STEEL MELTS ESSENTIALLY CONSISTING OF 4 TO 9% OF MAGNESIUM, 3 TO 7% OF RARE EARTH METALS, AT LEAST 40% OF AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF SILICON, NICKEL AND COPPER, 1 TO 3% OFCALCIUM AND ANY REMAINDER AT LEAST ONEMETAL SELECTED FROM THE GROUP CONSISTING OF IRON AND MANGANESE, THE RATIO OF MAGNESIUM TO RARE EARTH METALS BEING BETWEEN 1:1 AND 2.5:1, AND THE QUANTITY OF CALCIUM BEING SUCH THAT THE RATIO OF MAGNESIUM TO CALCIUM IS GREATER THAN 2:1.
Claim 2
Dependent Claim
94 words
A PREALLOY ADAPTED FOR THE TREATMENT OF IRON AND STEEL MELTS ESSENTIALLY CONSISTING OF 4 TO 9% OF MAGNESIUM, 3 TO 7% OF RARE EARTH METALS, AT LEAST 40% OF AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF SILICON, NICKEL AND COPPER, 1 TO 3% OFCALCIUM AND ANY REMAINDER AT LEAST ONEMETAL SELECTED FROM THE GROUP CONSISTING OF IRON AND MANGANESE, THE RATIO OF MAGNESIUM TO RARE EARTH METALS BEING BETWEEN 1:1 AND 2.5:1, AND THE QUANTITY OF CALCIUM BEING SUCH THAT THE RATIO OF MAGNESIUM TO CALCIUM IS GREATER THAN 2:1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |