Patent US3380849A successfully refreshed from Google Patents.
US3380849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alumina-zircon ceramic coatings and bodies
Assignee: EIDP Inc
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Filing: 1964-04-17
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Granted: 1968-04-30
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Expires: 1984-04-17
Abstract
No abstract record available.
Inventors
- 👤 Pollack Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:35
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/64; C04B35/65; C04B33/00; C04B33/32; C04B35/01; C04B35/10; C04B35/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD FOR PROTECTIVELY COATING A CERAMIC SUBSTRATE COMPRISING APPLYING TO THE SUBSTRATE A MIXTURE OF TABULAR ALUMINA OF -200 MESH, ZIRCON OF -150 MESH AND WATER, THE TABULAR ALUMINA CONSTITUTING FROM BETWEEN 40 AND 60% BY WEIGHT OF THE SOLIDS AND THE ZIRCON CONSTITUTING FROM BETWEEN 60 AND 40% BY WIEIGHT OF THE SOLIDS, AND FIRING THE COATED SUBSTRATE AT ABOUT 1400 TO 1500*C.
Claim 2
Independent Claim
65 words
A METHOD FOR PROTECTIVELY COATING A CERAMIC SUBSTRATE COMPRISING APPLYING TO THE SUBSTRATE A MIXTURE OF TABULAR ALUMINA OF -200 MESH, ZIRCON OF -150 MESH AND WATER, THE TABULAR ALUMINA CONSTITUTING FROM BETWEEN 40 AND 60% BY WEIGHT OF THE SOLIDS AND THE ZIRCON CONSTITUTING FROM BETWEEN 60 AND 40% BY WIEIGHT OF THE SOLIDS, AND FIRING THE COATED SUBSTRATE AT ABOUT 1400 TO 1500*C.
References Cited (Backward Citations)
US2842447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |