Patent US3061449A successfully refreshed from Google Patents.
US3061449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vitreous enamel frit
Assignee: EIDP Inc
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Filing: 1960-12-07
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Granted: 1962-10-30
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Expires: 1980-12-07
Abstract
No abstract record available.
Inventors
- 👤 Lewis C Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:46
CPC Classifications
C; C03; C03C; C03C8/00; C03C8/02; C03C8/10; C03C8/12; C03C2207/00; C03C2207/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A VITREOUS ENAMEL FRIT, SUITABLE FOR USE AS A PROTECTIVE COATING ON ALUMINUM COATED AND ALUMINUM-RICH ALLOY COATED STEEL, HAVING A MATURING TEMPERATURE OF LESS THAN 1000*F. AND A LINEAR COAFFICIENT OF THERMAL EXPANSION BETWEEN 90 AND 120X10-7 CM./CM./*C. AT LEAST 90 MOL PERCENT OF THE FRIT CONSISTING OF
Claim 2
Dependent Claim
49 words
A VITREOUS ENAMEL FRIT, SUITABLE FOR USE AS A PROTECTIVE COATING ON ALUMINUM COATED AND ALUMINUM-RICH ALLOY COATED STEEL, HAVING A MATURING TEMPERATURE OF LESS THAN 1000*F. AND A LINEAR COAFFICIENT OF THERMAL EXPANSION BETWEEN 90 AND 120X10-7 CM./CM./*C. AT LEAST 90 MOL PERCENT OF THE FRIT CONSISTING OF
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) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |