US3017249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon black recovery
Assignee: Phillips Petroleum Co
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Filing: 1959-10-06
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Granted: 1962-01-16
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Expires: 1979-10-06
Abstract
No abstract record available.
Inventors
- 👤 Donald A Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:43
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; C01; C01P; C01P2004/00; C01P2004/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS FOR RECOVERING CARBON BLACK FROM THE SMOKE FROM A CARBON BLACK FURNACE COMPRISING QUENCHING THE FURNACE SMOKE CONTAINING CARBON BLACK TO A TEMPERATURE IN THE RANGE OF 600-800* F., PASSING THE QUENCHED GASEOUS STREAM WITHOUT FURTHER QUENCHING, OTHER THAN HEAT LOSS TO THE ATMOSPHERE, THRU A PLURALITY OF CYCLONE SEPARATORS IN INDIRECT HEAT EXCHANGE WITH THE ATMOSPHERE THRU THE UNINSULATED WALLS THEREOF TO FURTHER REDUCE THE TEMPERATURE OF SAID STREAM TO THE RANGE OF ABOUT 500 TO 685* F. AND TO RECOVER ENTRAINEDBLACK; WATER QUENCHING THE GASEOUS EFFLUENT FRM THE DOWNSTREAM CYCLONE TO
Claim 2
Dependent Claim
95 words
A PROCESS FOR RECOVERING CARBON BLACK FROM THE SMOKE FROM A CARBON BLACK FURNACE COMPRISING QUENCHING THE FURNACE SMOKE CONTAINING CARBON BLACK TO A TEMPERATURE IN THE RANGE OF 600-800* F., PASSING THE QUENCHED GASEOUS STREAM WITHOUT FURTHER QUENCHING, OTHER THAN HEAT LOSS TO THE ATMOSPHERE, THRU A PLURALITY OF CYCLONE SEPARATORS IN INDIRECT HEAT EXCHANGE WITH THE ATMOSPHERE THRU THE UNINSULATED WALLS THEREOF TO FURTHER REDUCE THE TEMPERATURE OF SAID STREAM TO THE RANGE OF ABOUT 500 TO 685* F. AND TO RECOVER ENTRAINEDBLACK; WATER QUENCHING THE GASEOUS EFFLUENT FRM THE DOWNSTREAM CYCLONE TO
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) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |