US2984547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of finely divided pigments
Assignee: Cabot Corp
•
Filing: 1956-10-26
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Granted: 1961-05-16
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Expires: 1976-10-26
Abstract
No abstract record available.
Inventors
- 👤 Antonsen Randolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:46
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/565; C01; C01P; C01P2004/00; C01P2004/51
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS FOR INCREASING THE VOLATILE CONTENT OF OIL FURNACE CARBON BLACK WHICH COMPRISES CONCENTRATING THE FLUFFY CARBON BLACK BY SEPARATING IT FROM THE FURNACE EFFLUENT, PROMPTLY RESUSPENDING THE CONCENTRATED FLUFFY BLACK AS A RECONSTITUTED AEROSOL OF HIGHER CONCENTRATION THAN THE OIL FURNACE CARBON BLACK EFFLUENT IN A HOT GAS STREAM CONTAINING 1 TO 10% BY VOLUME MOLECULAR OXYGEN, CONVEYING THE HOT AEROSOL THROUGH A CONFINED ZONE AT A TEMPERATURE AND FOR A PERIOD OF TIME SUFFICIENT TO INCREASE THE VOLATILE CONTENT OF THE BLACK APPRECIABLY, AND RECOVERING THE TREATED BLACK IN FLUFFY CONDITION.
Claim 2
Dependent Claim
94 words
A PROCESS FOR INCREASING THE VOLATILE CONTENT OF OIL FURNACE CARBON BLACK WHICH COMPRISES CONCENTRATING THE FLUFFY CARBON BLACK BY SEPARATING IT FROM THE FURNACE EFFLUENT, PROMPTLY RESUSPENDING THE CONCENTRATED FLUFFY BLACK AS A RECONSTITUTED AEROSOL OF HIGHER CONCENTRATION THAN THE OIL FURNACE CARBON BLACK EFFLUENT IN A HOT GAS STREAM CONTAINING 1 TO 10% BY VOLUME MOLECULAR OXYGEN, CONVEYING THE HOT AEROSOL THROUGH A CONFINED ZONE AT A TEMPERATURE AND FOR A PERIOD OF TIME SUFFICIENT TO INCREASE THE VOLATILE CONTENT OF THE BLACK APPRECIABLY, AND RECOVERING THE TREATED BLACK IN FLUFFY CONDITION.
References Cited (Backward Citations)
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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) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |