US2846345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of carburizing steel and steel alloys, and fused salt bath thereof
Assignee: Imperial Chemical Industries Ltd
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Filing: 1956-03-23
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Granted: 1958-08-05
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Expires: 1976-03-23
Abstract
No abstract record available.
Inventors
- 👤 Waterfall Frederick David
- 👤 Hewson Robert Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:17
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/40; C23C8/42; C23C8/44; C23C8/46
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
42 words
A PROCESS FOR HEAT TREATING STEEL AND ALLOY STEEL WHICH COMPRISES HEATING THE STEEL IN A FUSED SALT BATH COMPRISING MORE THAN 50% BY WEIGHT OF AN ALKALI METAL HALIDE, AN ALKALI METAL CYANIDE AND 0.25% TO 5% BY WEIGHT OF TITANIUM.
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) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |