US3671278A
Expired / Lapsed
US
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Iron-containing titania-opacified porcelain enamels
Assignee: Vibrantz Corp
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Filing: 1970-06-05
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Granted: 1972-06-20
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Expires: 1990-06-05
Abstract
Abstract A PORCELAIN ENAMEL FRIT, CONTAINING A RELATIVELY HIGH LEVEL OF THE OXIDE EQUIVALENT OF IRON, SAID FRIT ADAPTABLE TO BE INCORPORATED INTO A VITREOUS PORCELAIN ENAMEL FOR APPLICATION TO AN OVEN LINER, SAID ENAMEL CHARACTERIZED BY THE ABILITY TO OXIDE OVEN SOILS WHEN HEATED TO A POINT ABOVE 350*F., BUT BELOW 600*F., THE METHOD OF UTILIZING SAME AS A SELF-CLEANING OVEN LINER COATING, AND AN OVEN LINER COATED THEREWITH.
Inventors
- 👤 Bernard J Borowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:48
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/005; B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/745; C; C03; C03C; C03C4/00; C03C8/00; C03C8/02; C03C8/04; C03C8/08; C03C2205/00; C03C2205/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |