Patent US2633438A successfully refreshed from Google Patents.
US2633438A
Expired / Lapsed
US
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Alloy and process
Assignee: Aralloy Co
•
Filing: 1950-09-07
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Granted: 1953-03-31
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Expires: 1970-09-07
Abstract
No abstract record available.
Inventors
- 👤 David J Uhle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:23
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/18; C21D1/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A PROCESS OF HEAT TREATING AN IRON ALLOY HAVING THE APPROXIMATE COMPOSITION IN THE RANGE OF:
Claim 2
Dependent Claim
16 words
A PROCESS OF HEAT TREATING AN IRON ALLOY HAVING THE APPROXIMATE COMPOSITION IN THE RANGE OF:
References Cited (Backward Citations)
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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) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |