US2887422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of continuously heat treating aluminum strip
Assignee: United Engineering and Foundry Co
•
Filing: 1950-02-25
•
Granted: 1959-05-19
•
Expires: 1970-02-25
Abstract
No abstract record available.
Inventors
- 👤 Morris D Stone
- 👤 Joseph I Greenberger
- 👤 Lamourdedieu Marcel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:41
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN THE METHOD OF CONTINUOUSLY HEAT TREATING ALUMINUM ALLOY OF THE PRECIPITATION HARDENABLE CLASS AND IN THE FORM OF ENDLESS STRIP THE STEPS COMPRISING RAPIDLY HEATING SAID STRIP IN A FIRST HEATING ZONE TO A TEMPERATURE WITHIN THE SOLUTION HEAT TREATING RANGE, MAINTAINING THE TEMPERATURE OF SAID STRIP WITHIN SAID RANGE IN A SECOND HEATING ZONE FOR A LIMITED PERIOD OF TIME GREATER THAN THAT REQUIRED FOR INITIALLY HEATING THE STRIP AND OF THE ORDER OF ONE-HALF TO THREE MINUTES AND QUENCHING SAID STRIP FROM A TEMPERATURE WITHIN TO A TEMPERATURE SUBSTANTIALLY BELOW SAID SOLUTION HEAT TREATING RANGE.
Claim 2
Dependent Claim
98 words
IN THE METHOD OF CONTINUOUSLY HEAT TREATING ALUMINUM ALLOY OF THE PRECIPITATION HARDENABLE CLASS AND IN THE FORM OF ENDLESS STRIP THE STEPS COMPRISING RAPIDLY HEATING SAID STRIP IN A FIRST HEATING ZONE TO A TEMPERATURE WITHIN THE SOLUTION HEAT TREATING RANGE, MAINTAINING THE TEMPERATURE OF SAID STRIP WITHIN SAID RANGE IN A SECOND HEATING ZONE FOR A LIMITED PERIOD OF TIME GREATER THAN THAT REQUIRED FOR INITIALLY HEATING THE STRIP AND OF THE ORDER OF ONE-HALF TO THREE MINUTES AND QUENCHING SAID STRIP FROM A TEMPERATURE WITHIN TO A TEMPERATURE SUBSTANTIALLY BELOW SAID SOLUTION HEAT TREATING RANGE.
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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) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |