US2707159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear-resistant ferrous metal articles and their production
Assignee: Lubri-Case Inc
•
Filing: 1951-01-13
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Granted: 1955-04-26
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Expires: 1971-01-13
Abstract
No abstract record available.
Inventors
- 👤 Foucry Jean Xavier
- 👤 Steinmetz Robert Francois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:30
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/40; C23C8/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
THE PROCESS OF PRODUCING A SURFACE HAVING ENHANCED WEAR RESISTANCE ON A PIECE OF FERROUS METAL WHICH COMPRISES SUBJECTING A SURFACE OF THE METAL PIECE TO THE ACTION OF A MOLTEN ALKALINE SALT COMPOSITION HAVING A TEMPERATURE ABOVE 550* C. AND CONTAINING A MOLTEN
Claim 2
Dependent Claim
44 words
THE PROCESS OF PRODUCING A SURFACE HAVING ENHANCED WEAR RESISTANCE ON A PIECE OF FERROUS METAL WHICH COMPRISES SUBJECTING A SURFACE OF THE METAL PIECE TO THE ACTION OF A MOLTEN ALKALINE SALT COMPOSITION HAVING A TEMPERATURE ABOVE 550* C. AND CONTAINING A MOLTEN
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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) | 1958-04-25 | 1958-10-25 | 1959-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-25 | 1962-10-25 | 1963-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-25 | 1966-10-25 | 1967-04-26 | $7700.00 | Window Closed / Lapsed |