US2631107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing carbon black containing substantial amounts of sulfur
Assignee: Phillips Petroleum Co
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Filing: 1950-12-15
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Granted: 1953-03-10
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Expires: 1970-12-15
Abstract
No abstract record available.
Inventors
- 👤 Gerald T Leatherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:07
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS FOR THE PRODUCTION OF CARBON BLACK CONTAINING SUBSTANTIAL AMOUNTS OF SULFUR WHICH COMPRISES REACTING A NORMALLY LIQUID HYDROCARBON HAVING A BOILING POINT WITHIN THE RANGE OF 400* TO 800* F. WITH SULFUR DIOXIDE PRESENT IN AN AMOUNT WITHIN THE RANGE OF 0.2 TO 10 PARTS BY WEIGHT PER PART BY WEIGHT OF SAID HYDROCARBON IN THE PRESENCE OF A CATALYST CONSISTING OF HYDROGEN FLUORIDE IN AN AMOUNT WITHIN THE RANGE OF 0.5 TO 5 PARTS BY WEIGHT PER PART BY WEIGHT OF SAID HYDROCARBON AT A TEMPERATURE WITHIN THE RANGE OF 300* TO 450* F. AND UNDER A PRESSURE SUFFICIENTLY HIGH TO MAINTAIN LIQUID PHASE CONDITIONS.
Claim 2
Dependent Claim
108 words
A PROCESS FOR THE PRODUCTION OF CARBON BLACK CONTAINING SUBSTANTIAL AMOUNTS OF SULFUR WHICH COMPRISES REACTING A NORMALLY LIQUID HYDROCARBON HAVING A BOILING POINT WITHIN THE RANGE OF 400* TO 800* F. WITH SULFUR DIOXIDE PRESENT IN AN AMOUNT WITHIN THE RANGE OF 0.2 TO 10 PARTS BY WEIGHT PER PART BY WEIGHT OF SAID HYDROCARBON IN THE PRESENCE OF A CATALYST CONSISTING OF HYDROGEN FLUORIDE IN AN AMOUNT WITHIN THE RANGE OF 0.5 TO 5 PARTS BY WEIGHT PER PART BY WEIGHT OF SAID HYDROCARBON AT A TEMPERATURE WITHIN THE RANGE OF 300* TO 450* F. AND UNDER A PRESSURE SUFFICIENTLY HIGH TO MAINTAIN LIQUID PHASE CONDITIONS.
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) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |