US2878151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing single-fire enameling stock devoid of fish-scaling and product thereof
Assignee: Armco Inc
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Filing: 1954-11-19
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Granted: 1959-03-17
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Expires: 1974-11-19
Abstract
No abstract record available.
Inventors
- 👤 Francis W Beall
- 👤 Robert S Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:36
CPC Classifications
C; C23; C23D; C23D3/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN A PROCESS OF PRODUCING A FERROUS ENAMELING STOCK FREE FROM A TENDENCY TO PRODUCE FISH-SCALING IN A FIREDON COATING OF VITREOUS ENAMEL, THE STEPS OF HOT ROLLING TO AN INTERMEDIATE GAUGE A FERROUS ENAMELING STOCK CONTAINING IN THE HOT ROLLED CONDITION AT LEAST SUBSTANTIALLY 02% CARBON, CAUSING SAID CARBON IN SAID STOCK TO FORM MASSIVE CARBIDES BY SLOWING COOLING SAIS STOCK FROM A TEMPERATURE ABOVE ITS A1 POINT AT A RATE NOT MORE RAPID THAN SUBSTANTIALLY 50* TO 100* F. PER HOUR WHILE SAID STOCK CONTAINS AT LEAST SUBSTANTIALLY .02% CARBON, COLD ROLLING THE STOCK CONTAINING THE SAID MASSIVE CARBIDES BY A REDUCTION OF AT LEAST ABOUT 25% WITHOUT INTERVENING ANNEALING, WHEREBY TO ELONGATE AND FRAGMENT AND MASSIVE CARBIDES, AND SUBJECTING THE SO-TREATED STOCK TO A HEAT TREATMENT.
Claim 2
Dependent Claim
129 words
IN A PROCESS OF PRODUCING A FERROUS ENAMELING STOCK FREE FROM A TENDENCY TO PRODUCE FISH-SCALING IN A FIREDON COATING OF VITREOUS ENAMEL, THE STEPS OF HOT ROLLING TO AN INTERMEDIATE GAUGE A FERROUS ENAMELING STOCK CONTAINING IN THE HOT ROLLED CONDITION AT LEAST SUBSTANTIALLY 02% CARBON, CAUSING SAID CARBON IN SAID STOCK TO FORM MASSIVE CARBIDES BY SLOWING COOLING SAIS STOCK FROM A TEMPERATURE ABOVE ITS A1 POINT AT A RATE NOT MORE RAPID THAN SUBSTANTIALLY 50* TO 100* F. PER HOUR WHILE SAID STOCK CONTAINS AT LEAST SUBSTANTIALLY .02% CARBON, COLD ROLLING THE STOCK CONTAINING THE SAID MASSIVE CARBIDES BY A REDUCTION OF AT LEAST ABOUT 25% WITHOUT INTERVENING ANNEALING, WHEREBY TO ELONGATE AND FRAGMENT AND MASSIVE CARBIDES, AND SUBJECTING THE SO-TREATED STOCK TO A HEAT TREATMENT.
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) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |