US2544671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming composite products consisting of ferrous metal and aluminum or aluminum-base alloy
Assignee: Motors Liquidation Co
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Filing: 1948-02-12
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Granted: 1951-03-13
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Expires: 1968-02-12
Abstract
No abstract record available.
Inventors
- 👤 Howard L Grange
- 👤 Dean K Hanink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:04
CPC Classifications
C; C23; C23C; C23C6/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12757
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
THE METHOD OF FORMING A COMPOSITE PRODUCT OF FERROUS METAL AND A METAL CONSISTING OF AT LEAST ABOUT 80% ALUMINUM WHICH COMPRISES IMMERSING THE FERROUS METAL IN A FUSED SALT BATH COMPOSED SUBSTANTIALLY AS FOLLOWS: 37 TO 57 KCL; 25 TO 45 NACI; 8 TO 20% NA3ALF6; 0.5 TO 12% ALF3; SAID FUSED SALT BEING ACTIVATED BY ALUMINUM IN CONTACT THEREWITH, SAID FUSED SALT BEING AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 1250* F. TO ABOUT 1600* F., SAID FERROUS METAL HAVING A TEMPERATURE WHILE IN SAID FUSED SALT BATH, OF AT LEAST ABOUT 1250* F., THEN IMMERSING THE HEATED FERROUS METAL IN A MOLTEN METAL COATING BATH CONSISTING OF AT LEAST ABOUT 80% ALUMINUM, THEN REMOVING THE COATED FERROUS METAL FROM THE COATING BATH AND, BEFORE THE COATING HAS COMPLETELY SOLIDIFIED CASTING MOLTEN METAL CONSISTING OF AT LEAST ABOUT 80% ALUMINUM INTO CONTACT WITH SAID COATED FERROUS METAL.
Claim 2
Independent Claim
150 words
THE METHOD OF FORMING A COMPOSITE PRODUCT OF FERROUS METAL AND A METAL CONSISTING OF AT LEAST ABOUT 80% ALUMINUM WHICH COMPRISES IMMERSING THE FERROUS METAL IN A FUSED SALT BATH COMPOSED SUBSTANTIALLY AS FOLLOWS: 37 TO 57 KCL; 25 TO 45 NACI; 8 TO 20% NA3ALF6; 0.5 TO 12% ALF3; SAID FUSED SALT BEING ACTIVATED BY ALUMINUM IN CONTACT THEREWITH, SAID FUSED SALT BEING AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 1250* F. TO ABOUT 1600* F., SAID FERROUS METAL HAVING A TEMPERATURE WHILE IN SAID FUSED SALT BATH, OF AT LEAST ABOUT 1250* F., THEN IMMERSING THE HEATED FERROUS METAL IN A MOLTEN METAL COATING BATH CONSISTING OF AT LEAST ABOUT 80% ALUMINUM, THEN REMOVING THE COATED FERROUS METAL FROM THE COATING BATH AND, BEFORE THE COATING HAS COMPLETELY SOLIDIFIED CASTING MOLTEN METAL CONSISTING OF AT LEAST ABOUT 80% ALUMINUM INTO CONTACT WITH SAID COATED FERROUS METAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |