US2572702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cooling enameled steel after firing
Assignee: United States Steel Corp
•
Filing: 1950-03-07
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Granted: 1951-10-23
•
Expires: 1970-03-07
Abstract
No abstract record available.
Inventors
- 👤 Henry M Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:37
CPC Classifications
C; C23; C23D; C23D5/00; C23D13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A METHOD OF ENAMELING, THE STEPS INCLUDING FIRING STEEL WARE HAVING A COATING OF DRIED ENAMEL SLIP THEREON, AT A TEMPERATURE ABOVE THE FUSION TEMPERATURE OF THE SLIP RESIDUE, I. E., ABOUT 1500 TO 1550* F. AND AFTER FUSION OF THE SLIP RESIDUE, COOLING THE WARE IN TWO SUCCESSIVE STAGES, SAID COOLING BEING CARRIED OUT BY TRANSFERRING THE WARE FROM THE FIRING ZONE TO A COOLING ZONE MAINTAINED AT ABOUT 400* F. AND ALLOWING THE WARE TO COOL RAPIDLY TO APPROXIMATELY THAT TEM-
Claim 2
Dependent Claim
84 words
IN A METHOD OF ENAMELING, THE STEPS INCLUDING FIRING STEEL WARE HAVING A COATING OF DRIED ENAMEL SLIP THEREON, AT A TEMPERATURE ABOVE THE FUSION TEMPERATURE OF THE SLIP RESIDUE, I. E., ABOUT 1500 TO 1550* F. AND AFTER FUSION OF THE SLIP RESIDUE, COOLING THE WARE IN TWO SUCCESSIVE STAGES, SAID COOLING BEING CARRIED OUT BY TRANSFERRING THE WARE FROM THE FIRING ZONE TO A COOLING ZONE MAINTAINED AT ABOUT 400* F. AND ALLOWING THE WARE TO COOL RAPIDLY TO APPROXIMATELY THAT TEM-
References Cited (Backward Citations)
US193669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |