US3592599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quality control carbon black production
Assignee: Phillips Petroleum Co
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Filing: 1968-08-26
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Granted: 1971-07-13
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Expires: 1988-08-26
Abstract
Abstract A METHOD FOR CONTROLLING THE QUALITY OF CARBON BLACK PRODUCED FROM THE PYROLYTIC DECOMPOSITION OF A HYDROCARBON FEED WHICH COMPRISES ADJUSTING THE HYDROCARBON FEED RATE TO THE REACTOR IN RESPONSE TO VARIATIONS IN THE WATER CONTENT OF THE REACTANT STREAMS, PARTICULARLY THE OXYGEN-CONTAINING GAS, FED TO THE REACTOR.
Inventors
- 👤 Gerhard A Gohlke
- 👤 John A Drummond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:16
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; C01; C01P; C01P2006/00; C01P2006/12; C01P2006/19; Y; Y10; Y10T; Y10T436/00; Y10T436/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |