US3012899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing cadmium sulfide telluride pigment
Assignee: Harshaw Chemical Co
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Filing: 1959-07-13
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Granted: 1961-12-12
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Expires: 1979-07-13
Abstract
No abstract record available.
Inventors
- 👤 Giordano Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:11
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/10; C09C1/12; C01; C01P; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS OF PREPARING A RED CADMIUM SULFIDE TELLURIDE PIGMENT BY CALCINING A CALCINATION MIXTURE CONSISTING ESSENTIALLY OF CADMIUM SULFIDE, A SOURCE OF TELLURIUM, AND A MINERALIZER COMPONENT PRESENT IN AMOUNTS OF FROM 0.5% TO ABOUT 1.0% BASED ON THE TOTAL SOLIDS WEIGHT OF THE FINISHED PIGMENT, SAID CALCINATION MIXTURE CONTAINING AN AMOUNT OF FREE SULFUR NOT IN EXCESS OF ABOUT 0.25% OF TOTAL SOLIDS WEIGHT OF THE FINISHED PIGMENT, AND SAID SOURCE OF TELLURIUM BEING PRESENT IN A PARTICLE SIZE OF FROM ABOUT 0.02 MICRON TO ABOUT 7 MICRONS.
Claim 2
Dependent Claim
90 words
A PROCESS OF PREPARING A RED CADMIUM SULFIDE TELLURIDE PIGMENT BY CALCINING A CALCINATION MIXTURE CONSISTING ESSENTIALLY OF CADMIUM SULFIDE, A SOURCE OF TELLURIUM, AND A MINERALIZER COMPONENT PRESENT IN AMOUNTS OF FROM 0.5% TO ABOUT 1.0% BASED ON THE TOTAL SOLIDS WEIGHT OF THE FINISHED PIGMENT, SAID CALCINATION MIXTURE CONTAINING AN AMOUNT OF FREE SULFUR NOT IN EXCESS OF ABOUT 0.25% OF TOTAL SOLIDS WEIGHT OF THE FINISHED PIGMENT, AND SAID SOURCE OF TELLURIUM BEING PRESENT IN A PARTICLE SIZE OF FROM ABOUT 0.02 MICRON TO ABOUT 7 MICRONS.
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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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |