US3043680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preventing carburization in molten metals
Assignee: North American Aviation Corp
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Filing: 1959-11-23
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Granted: 1962-07-10
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Expires: 1979-11-23
Abstract
No abstract record available.
Inventors
- 👤 Walter C Hayes
- 👤 Orson C Shepard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:54
CPC Classifications
C; C23; C23F; C23F11/00; C21; C21C; C21C7/00; C22; C22C; C22C19/00; C23C; C23C10/00; C23C10/18; C23C10/20; C23C10/22; G; G21; G21C; G21C15/00; G21C15/28; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A METHOD OF PREVENTING CARBURIZATION OF AN ALLOY STEEL IN A HOT MOLTEN METAL SYSTEM SELECTED FROM THE GROUP CONSISTING OF SODIUM, LITHIUM, TIN, BISMUTH, AND BISMUTH-TIN, WHICH COMPRISES PLACING IN SAID MOLTEN METAL AN ALLOY CONSISTING ESSENTIALLY OF APPROXIMATELY 5-30 WEIGHT PERCENT OF AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF MANGANESE, CHROMIUM, MOLYBDENUM, TANTALUM, VANADIUM, NIOBIUM, AND TITANIU, AND THE REMAINDER AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF IRON AND NICKEL, THEREBY GETTERING CARBON FROM SAID MOLTEN METAL IN SAID ALLOY.
Claim 2
Independent Claim
88 words
A METHOD OF PREVENTING CARBURIZATION OF AN ALLOY STEEL IN A HOT MOLTEN METAL SYSTEM SELECTED FROM THE GROUP CONSISTING OF SODIUM, LITHIUM, TIN, BISMUTH, AND BISMUTH-TIN, WHICH COMPRISES PLACING IN SAID MOLTEN METAL AN ALLOY CONSISTING ESSENTIALLY OF APPROXIMATELY 5-30 WEIGHT PERCENT OF AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF MANGANESE, CHROMIUM, MOLYBDENUM, TANTALUM, VANADIUM, NIOBIUM, AND TITANIU, AND THE REMAINDER AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF IRON AND NICKEL, THEREBY GETTERING CARBON FROM SAID MOLTEN METAL IN SAID ALLOY.
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) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |