US2866713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vitreous phosphate enamels and their use
Assignee: EIDP Inc
•
Filing: 1956-04-03
•
Granted: 1958-12-30
•
Expires: 1976-04-03
Abstract
No abstract record available.
Inventors
- 👤 Robert P Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:44
CPC Classifications
C; C03; C03C; C03C8/00; C03C8/02; C03C8/08; C03C2207/00; C03C2207/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A LEAD-FREE VITREOUS ENAMEL FRIT SUITABLE FOR USE AS A PROTECTIVE COATING ON THE SURFACE OF ALUMINUM AND ALUMINUM-RICH ALLOYS, HAVING A FIRING AND MATURING TEMPERATURE OF BETWEEN 500* AND 580*C. AND WHICH CONSISTS ESSENTIALLY OF
Claim 2
Dependent Claim
36 words
A LEAD-FREE VITREOUS ENAMEL FRIT SUITABLE FOR USE AS A PROTECTIVE COATING ON THE SURFACE OF ALUMINUM AND ALUMINUM-RICH ALLOYS, HAVING A FIRING AND MATURING TEMPERATURE OF BETWEEN 500* AND 580*C. AND WHICH CONSISTS ESSENTIALLY OF
References Cited (Backward Citations)
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GB697827A
Cited
FR1052227A
Cited
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Cited
US2800414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |