US3271171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gray ceramics containing a calcined mixture of aluminum and vanadium compounds
Assignee: Vibrantz Corp
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Filing: 1965-06-16
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Granted: 1966-09-06
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Expires: 1985-06-16
Abstract
No abstract record available.
Inventors
- 👤 Burgyan Aladar
- 👤 Votava Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:03
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/0009; C01; C01P; C01P2004/00; C01P2004/80; C01P2006/00; C01P2006/60; C01P2006/80
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
134 words
AS AN ARTICLE OF MANUFACTURE, A GRAY FIRED CERAMIC BODY WHICH DERIVES ITS GRAY COLOR FROM A HEAT STABLE GRAY PIGMENT WHICH IS THE UNFUSED CALCINATION PRODUCT OF A COMBINATION OF ALUMINUM AND VANADIUM COMPOUNDS, SAID GRAY PIGMENT PRESENT IN SAID CERAMIC BODY IN AN AMOUNT FROM ABOUT 0.5 TO ABOUT 15.0 PARTS THEREOF BASED ON THE WEIGHT OF SAID CASTING BODY, SAID PIGMENT DERIVING ITS PIGMENTATION EFFECT FROM THE PRESENCE THEREIN OF THE OXIDE EQUIVALENTS, RESPECTIVELY, OF VANADIUM, EXPRESSED AS V2O5, IN FROM ABOUT 0.5 TO ABOUT 20 PARTS BY WEIGHT, AND ALUMINUM, EXPRESSED AS AL2O3, IN FROM ABOUT 80 TO ABOUT 99.5 PARTS BY WEIGHT, SAID PARTS BY WEIGHT BASED ON THE TOTAL PIGMENT COMPOSITION TAKEN AS 100 PARTS BY WEIGHT, SAID COLOR IMPARTED TO SAID ARTICLE HAVING IMPROVED STABILITY AND DURABILITY.
References Cited (Backward Citations)
US2847317A
Cited
US3025178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |