US2704249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for separating composite aluminum-iron articles
Assignee: Motors Liquidation Co
•
Filing: 1952-04-10
•
Granted: 1955-03-15
•
Expires: 1972-04-10
Abstract
No abstract record available.
Inventors
- 👤 Mushovic Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:51
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/0038; C22B21/0069; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN A METHOD FOR SEPARATING COMPOSITE ARTICLE COMPRISING ALUMINUM AND/OR ALUMINUM ALLOYS BONDED TO IRON AND/OR ITS ALLOYS WITHOUT MELTING THE ALUMINUM, THE STEPS COMPRISING; HEATING THE COMPOSITE ARTICLE AT A TEMPERATURE OF ABOUT 1050* F. FOR ABOUT THREE HOURS AND SUFFICIENT TO CAUSE THE FORMATION OF A BRITTLE IRON ALUMNUM ALLOY LAYER ONLY AT THE INTER-FACE, FRACTURING SAID BRITTLE INTER-FACE, BY TUMBLING THE ARTICLES FOR CAUSING THE ALUMINUM TO BECOME DETACEHED FROM THE IRON AND THEN SEPARATING THE ALUMINUM FROM THE IRON.
Claim 2
Dependent Claim
83 words
IN A METHOD FOR SEPARATING COMPOSITE ARTICLE COMPRISING ALUMINUM AND/OR ALUMINUM ALLOYS BONDED TO IRON AND/OR ITS ALLOYS WITHOUT MELTING THE ALUMINUM, THE STEPS COMPRISING; HEATING THE COMPOSITE ARTICLE AT A TEMPERATURE OF ABOUT 1050* F. FOR ABOUT THREE HOURS AND SUFFICIENT TO CAUSE THE FORMATION OF A BRITTLE IRON ALUMNUM ALLOY LAYER ONLY AT THE INTER-FACE, FRACTURING SAID BRITTLE INTER-FACE, BY TUMBLING THE ARTICLES FOR CAUSING THE ALUMINUM TO BECOME DETACEHED FROM THE IRON AND THEN SEPARATING THE ALUMINUM FROM THE 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) | 1958-03-14 | 1958-09-13 | 1959-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-14 | 1962-09-13 | 1963-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-14 | 1966-09-13 | 1967-03-15 | $7700.00 | Window Closed / Lapsed |