US2930690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aluminum containing iron base alloys
Assignee: Universal Cyclops Steel Corp
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Filing: 1958-12-24
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Granted: 1960-03-29
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Expires: 1978-12-24
Abstract
No abstract record available.
Inventors
- 👤 Mathias J Meinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:51
CPC Classifications
C; C22; C22C; C22C33/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN THE METHOD OF PREPARING ALUMINUM-CONTAINING IRON BASE ALLOYS IN WHICH IRON IS MELTED AND IS THEN REFINED BY ADDING DEOXIDANTS THERETO WHILE SAID IRON IS MAINTAINED UNDER A REDUCING SLAG AND THE RESULTING DEOXIDIZED IRON IS ALLOYED WITH ABOUT 2 TO 18 PERCENT BY WEIGHT OF DEOXIDIZED ALUMINUM, THE IMPROVEMENT COMPRISING ADDING TO SAID REFINED, DEOXIDIZED MOLTEN IRON, JUST PRIOR TO ALLOYING, AN EFFECTIVE AMOUNT UP TO 5 PERCENT BY WEIGHT, BASED ON THE IRON, OF REFINED ALUMINUM METAL SUFFICIENT TO PREVENT VIOLENT REACTION UPON SUBSEQUENT ALLOYING OF ALUMINUM WITH SAID IRON, AND THOROUGHLY MIXING SAID REFINED ALUMINUM THROUGHOUT SAID IRON.
Claim 2
Dependent Claim
102 words
IN THE METHOD OF PREPARING ALUMINUM-CONTAINING IRON BASE ALLOYS IN WHICH IRON IS MELTED AND IS THEN REFINED BY ADDING DEOXIDANTS THERETO WHILE SAID IRON IS MAINTAINED UNDER A REDUCING SLAG AND THE RESULTING DEOXIDIZED IRON IS ALLOYED WITH ABOUT 2 TO 18 PERCENT BY WEIGHT OF DEOXIDIZED ALUMINUM, THE IMPROVEMENT COMPRISING ADDING TO SAID REFINED, DEOXIDIZED MOLTEN IRON, JUST PRIOR TO ALLOYING, AN EFFECTIVE AMOUNT UP TO 5 PERCENT BY WEIGHT, BASED ON THE IRON, OF REFINED ALUMINUM METAL SUFFICIENT TO PREVENT VIOLENT REACTION UPON SUBSEQUENT ALLOYING OF ALUMINUM WITH SAID IRON, AND THOROUGHLY MIXING SAID REFINED ALUMINUM THROUGHOUT SAID IRON.
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) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |