Patent US3587556A successfully refreshed from Google Patents.
US3587556A
Expired / Lapsed
US
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Self-cleaning cooking device
Assignee: Westinghouse Electric Corp
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Filing: 1967-12-07
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Granted: 1971-06-28
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Expires: 1987-12-07
Abstract
Abstract A COOKING DEVICE IN WHICH THE WALLS THEREOF HAVE AN OXIDIZING CATALYTIC COATING IN THE FORM OF A BUILT-UP LAYER PREFERABLY APPLIED AS A GLASS-FRIT-CATALYST MIXTURE AND PARTIALLY FUSED TO FORM A POROUS MATRIX LAYER BONDED TO THE BASE ENAMEL LAYER OF THE WALL WITH THE CATALYST DISPERSED THROUGHOUT THE MATRIX.
Inventors
- 👤 William C Moreland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:27
CPC Classifications
C; C03; C03C; C03C8/00; C03C8/14; C03C4/00; C03C2205/00; C03C2205/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |