US2916388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vitreous enamel
Assignee: Consolidated Electrodynamics Corp
•
Filing: 1957-08-26
•
Granted: 1959-12-08
•
Expires: 1977-08-26
Abstract
No abstract record available.
Inventors
- 👤 Earl John Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:56
CPC Classifications
C; C03; C03C; C03C8/00; C03C8/02; C03C8/10; C03C3/00; C03C3/04; C03C3/062; C03C3/07; C03C3/072; C03C3/076; C03C3/102; C03C3/108; C03C2205/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A VITREOUS ENAMEL WHICH BY WEIGHT CONSISTS ESSENTIALLY OF FROM ABOUT 35% TO ABOUT 55% LEAD OXIDE, FROM ABOUT 10% TO ABOUT 20% OF A METALLIC OXIDE SELECTED FROM THE GROUP CONSISTING OF OXIDES OF BARIUM, STRONTIUM, CALCIUM, MAGNESIUM, CADMIUM AND BERYLLIUM, FROM ABOUT 2% TO ABOUT 10% OF A METALLIC OXIDE SELECTED FROM THE GROUP CONSISTING OF OXIDES OF COBALT, MANGANESE, NICKEL AND IRON, FROM ABOUT 1% TO ABOUT 5% ALUMINUM OXIDE, FROM ABOUT 6% TO ABOUT 10% BORON OXIDE, AND FROM ABOUT 20% TO ABOUT 40% SILICON DIOXIDE.
Claim 2
Dependent Claim
90 words
A VITREOUS ENAMEL WHICH BY WEIGHT CONSISTS ESSENTIALLY OF FROM ABOUT 35% TO ABOUT 55% LEAD OXIDE, FROM ABOUT 10% TO ABOUT 20% OF A METALLIC OXIDE SELECTED FROM THE GROUP CONSISTING OF OXIDES OF BARIUM, STRONTIUM, CALCIUM, MAGNESIUM, CADMIUM AND BERYLLIUM, FROM ABOUT 2% TO ABOUT 10% OF A METALLIC OXIDE SELECTED FROM THE GROUP CONSISTING OF OXIDES OF COBALT, MANGANESE, NICKEL AND IRON, FROM ABOUT 1% TO ABOUT 5% ALUMINUM OXIDE, FROM ABOUT 6% TO ABOUT 10% BORON OXIDE, AND FROM ABOUT 20% TO ABOUT 40% SILICON DIOXIDE.
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) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |