US2510071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vitreous enameling of ferrous metal
Assignee: Poor and Co
•
Filing: 1945-08-09
•
Granted: 1950-06-06
•
Expires: 1965-08-09
Abstract
No abstract record available.
Inventors
- 👤 Allan E Chester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:57
CPC Classifications
C; C23; C23D; C23D3/00; C25; C25D; C25D5/00; C25D5/34; C25D5/36; Y; Y10; Y10S; Y10S205/00; Y10S205/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A VITREOUS ENAMEL COATED ARTICLE OBTAINED BY FIRING A VITREOUS ENAMEL ON A STEEL HAVING AN AVERAGE CARBON CONTENT IN EXCESS OF 0.02% AND NOT MORE THAN 0.20%, WHICH HAS BEEN ACID PICKLED AND HAS HAD A COATING OF COLLOIDAL SULPHUR DEPOSITED ON THE PICKLED SURFACE AND COMPLETELY COATED AND SEALED WITH A COATING OF A THIN PLATE OF A METAL FROM THE GROUP CONSISTING OF COBALT, NICKEL AND ALLOYS OF COBALT WITH SULPHUR PRIOR TO FIRING THE VITREOUS ENAMEL THEREON.
Claim 2
Dependent Claim
81 words
A VITREOUS ENAMEL COATED ARTICLE OBTAINED BY FIRING A VITREOUS ENAMEL ON A STEEL HAVING AN AVERAGE CARBON CONTENT IN EXCESS OF 0.02% AND NOT MORE THAN 0.20%, WHICH HAS BEEN ACID PICKLED AND HAS HAD A COATING OF COLLOIDAL SULPHUR DEPOSITED ON THE PICKLED SURFACE AND COMPLETELY COATED AND SEALED WITH A COATING OF A THIN PLATE OF A METAL FROM THE GROUP CONSISTING OF COBALT, NICKEL AND ALLOYS OF COBALT WITH SULPHUR PRIOR TO FIRING THE VITREOUS ENAMEL THEREON.
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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) | 1953-06-05 | 1953-12-05 | 1954-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-05 | 1957-12-05 | 1958-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-05 | 1961-12-05 | 1962-06-06 | $7700.00 | Window Closed / Lapsed |