US3238634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for drying wet particulate solids
Assignee: Phillips Petroleum Co
•
Filing: 1962-04-09
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Granted: 1966-03-08
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Expires: 1982-04-09
Abstract
No abstract record available.
Inventors
- 👤 Robert R Goins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:28
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58; B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; C01; C01P; C01P2004/00; C01P2004/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A PROCESS FOR DRYING WET PELLETS OF CARBON BLACK WHICH COMPRISES MAINTAINING SAID PELLETS IN A RELATIVELY DEEP AND NARROW FLUIDIZED BED IN A HOT DLUIDIZING AND DRYING GAS IN A DRYING ZONE SO AS TO DRY SAME TO A MOISTURE CONTENT BELOW ABOUT 1 WEIGHT PERCENT; PASSING THE RESULTING DRIED PELLETS FROM AN UPPER SECTION OF SAID BED TO A TREATING ZONE AND TREATING SAME WITH A HOT TREATING GAS THEREIN; PASSING RESULTING TREATED PELLETS FROM AN UPEPR SECTION OF SAID TREATING ZONE TO A COOLING ZONE AND CONTACTING SAME THEREIN WITH A COOLING GAS TO COOL SAME TO A TEMPERATURE BELOW ABOUT 400*F.
Claim 2
Dependent Claim
105 words
A PROCESS FOR DRYING WET PELLETS OF CARBON BLACK WHICH COMPRISES MAINTAINING SAID PELLETS IN A RELATIVELY DEEP AND NARROW FLUIDIZED BED IN A HOT DLUIDIZING AND DRYING GAS IN A DRYING ZONE SO AS TO DRY SAME TO A MOISTURE CONTENT BELOW ABOUT 1 WEIGHT PERCENT; PASSING THE RESULTING DRIED PELLETS FROM AN UPPER SECTION OF SAID BED TO A TREATING ZONE AND TREATING SAME WITH A HOT TREATING GAS THEREIN; PASSING RESULTING TREATED PELLETS FROM AN UPEPR SECTION OF SAID TREATING ZONE TO A COOLING ZONE AND CONTACTING SAME THEREIN WITH A COOLING GAS TO COOL SAME TO A TEMPERATURE BELOW ABOUT 400*F.
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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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |