US3053685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigments
Assignee: Associated Lead Manufacturers Ltd
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Filing: 1961-04-13
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Granted: 1962-09-11
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Expires: 1981-04-13
Abstract
No abstract record available.
Inventors
- 👤 Jamieson Helen Dolores
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:40
CPC Classifications
C; C03; C03B; C03B13/00; C03B13/12; C09; C09C; C09C1/00; C09C1/0009; C09C1/0012; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2004/80; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
A METHOD OF MANUFACTURING A STAIN FOR INCORPORATION IN GLAZES FOR CEROMINCS, WHICH INCLUDES THE STEPS OF CALCINING FOR ONE HOUR A MIXTURE INPOWDERED FORM OF 10-20 PARTS BY WEIGHT OF ZIRCON, 5-10 PARTS BY WEIGHT OF TIN OXIDE, 3-10 PARTS BY WEIGHT OF WHITING AND 0.5-10 PARTS BY WEIGHT OF POTASSIUM DICHROMATE AT A TEMPERATURE BETWEEN 1100*C. AND 1400*C., THE ZIRCON BEING PRESENT IN THE MIXTURE AS PARTICLES HAVING A SIZE NOT EXCEEDING 5 MICRONS, WASHING THE CALCINED MIXTURE FIRST WITH MINERAL ACID AND THEN WITH WATER AND FINALLY CALCINING AGAIN FOR A FURTHER HOUR AT A TEMPERATURE BETWEEN 1100*C. AND 1400*C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |