US2909438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vitreous enamel compositions for aluminum and its alloys
Assignee: Vitro Corp of America
•
Filing: 1956-02-06
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Granted: 1959-10-20
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Expires: 1976-02-06
Abstract
No abstract record available.
Inventors
- 👤 Kautz Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:37
CPC Classifications
C; C03; C03C; C03C8/00; C03C8/02; C03C8/10; C03C8/12; C03C8/04; C03C2207/00; C03C2207/08; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12597; Y10T428/12604
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A VITREOUS ENAMEL COMPOSITION ESPECIALLY ADAPTED FOR USE OF A PROTECTIVE OR DECORATIVE COATING FOR ALUMIUM AND ALUMINUM BASE ALLOYS AND ADAPTED TO BE FIRED AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 900* TO ABOUT 1000*F. CONSISTING ESSENTIALLY OF FROM ABOUT 0.5 TO ABOUT 10% ZINC OXIDE, FROM ABOUT 5 TO ABOUT 25% POTASSIUM OXIDE, FROM ABOUT 5 TO ABOUT 25% SODIUM OXIDE, FROM 0 TO ABOUT 5% LITHIUM OXIDE, FROM 15 TO ABOUT 30% SILICA, FROM ABOUT 15 TO ABOUT 25 TITANIUM DIOXIDE, FROM ABOUT 1 TO ABOUT 15% BORIC OXIDE, FROM 0 TO ABOUT 25% PLUMBOUS OXIDE AND FROM ABOUT 3 TO ABOUT 13% ANTIMONY TRIOXIDE, THE LEVEL OF COMBINED SODIUM OXIDE, POTASSIUM OXIDE AND LITHIUM OXIDE COMING WITHIN THE RANGE OF FROM ABOUT 22.5 TO ABOUT 37.5%, AND THE SAID WEIGHT PERCENTAGES BEING BASED UPON THE COMPOSITION OF THE ENAMEL AFTER FIRING.
Claim 2
Dependent Claim
147 words
A VITREOUS ENAMEL COMPOSITION ESPECIALLY ADAPTED FOR USE OF A PROTECTIVE OR DECORATIVE COATING FOR ALUMIUM AND ALUMINUM BASE ALLOYS AND ADAPTED TO BE FIRED AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 900* TO ABOUT 1000*F. CONSISTING ESSENTIALLY OF FROM ABOUT 0.5 TO ABOUT 10% ZINC OXIDE, FROM ABOUT 5 TO ABOUT 25% POTASSIUM OXIDE, FROM ABOUT 5 TO ABOUT 25% SODIUM OXIDE, FROM 0 TO ABOUT 5% LITHIUM OXIDE, FROM 15 TO ABOUT 30% SILICA, FROM ABOUT 15 TO ABOUT 25 TITANIUM DIOXIDE, FROM ABOUT 1 TO ABOUT 15% BORIC OXIDE, FROM 0 TO ABOUT 25% PLUMBOUS OXIDE AND FROM ABOUT 3 TO ABOUT 13% ANTIMONY TRIOXIDE, THE LEVEL OF COMBINED SODIUM OXIDE, POTASSIUM OXIDE AND LITHIUM OXIDE COMING WITHIN THE RANGE OF FROM ABOUT 22.5 TO ABOUT 37.5%, AND THE SAID WEIGHT PERCENTAGES BEING BASED UPON THE COMPOSITION OF THE ENAMEL AFTER FIRING.
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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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |