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US2693441A
Expired / Lapsed
US
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Feed preparation for furnace black production
Assignee: Phillips Petroleum Co
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Filing: 1951-01-02
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Granted: 1954-11-02
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Expires: 1971-01-02
Abstract
No abstract record available.
Inventors
- 👤 Carl J Helmers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:37
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A PROCESS FOR PRODUCING AN IMPROVED FURNACE CARBON BLACK FEED STOCK IN INCREASED YIELD BASED ON THE FEED STOCK CHARGED TO THE PROCESS COMPRISING THE STEPS OF SUBJECTING A CATALYTIC GAS OIL FEED STOCK HAVING A BOILING RANGE FROM A TEMPERATURE BELOW 450* F. TO ABOUT 750* F. AND OBTAINED FROM A CATALYTIC CRACKING OPERATION TO A DISTILLATION OPERATION TO PRODUCE AN OVERHEAD DISTILLATE PRODUCT BOILING UP TO ABOUT 450* F. AND A BOTTOMS PRODUCT BOILING FROM ABOUT 450* F. TO SAID 750* F., SOLVENT EXTRACTING SAID BOTTOMS PRODUCT WITH FURFURAL TO PRODUCE A RAFFINATE PHASE AND AN EXTRACT PHASE, RECOVERING SOLUTION FURFURAL FROM THE RAFFINATE PHASE, SUBJECTING THE EXTRACT PHASE TO A DISTILLATION OPERATION AND PRODUCING AN OVERHEAD PRODUCT COMPRISING FURFURAL AND A BOTTOMS PRODUCT COMPRISING A GAS OIL FRACTION BOILING FROM ABOUT 450* F. TO 750* F., COMBINING THIS LATTER GAS OIL FRACTION WITH THE AFORESAID OVERHEAD DISTILLATE PRODUCT BOILING UP TO ABOUT 450* F. TO PRODUCE AN IMPROVED FURNACE CARBON BLACK FEED STOCK INCREASED YIELD.
Claim 2
Dependent Claim
168 words
A PROCESS FOR PRODUCING AN IMPROVED FURNACE CARBON BLACK FEED STOCK IN INCREASED YIELD BASED ON THE FEED STOCK CHARGED TO THE PROCESS COMPRISING THE STEPS OF SUBJECTING A CATALYTIC GAS OIL FEED STOCK HAVING A BOILING RANGE FROM A TEMPERATURE BELOW 450* F. TO ABOUT 750* F. AND OBTAINED FROM A CATALYTIC CRACKING OPERATION TO A DISTILLATION OPERATION TO PRODUCE AN OVERHEAD DISTILLATE PRODUCT BOILING UP TO ABOUT 450* F. AND A BOTTOMS PRODUCT BOILING FROM ABOUT 450* F. TO SAID 750* F., SOLVENT EXTRACTING SAID BOTTOMS PRODUCT WITH FURFURAL TO PRODUCE A RAFFINATE PHASE AND AN EXTRACT PHASE, RECOVERING SOLUTION FURFURAL FROM THE RAFFINATE PHASE, SUBJECTING THE EXTRACT PHASE TO A DISTILLATION OPERATION AND PRODUCING AN OVERHEAD PRODUCT COMPRISING FURFURAL AND A BOTTOMS PRODUCT COMPRISING A GAS OIL FRACTION BOILING FROM ABOUT 450* F. TO 750* F., COMBINING THIS LATTER GAS OIL FRACTION WITH THE AFORESAID OVERHEAD DISTILLATE PRODUCT BOILING UP TO ABOUT 450* F. TO PRODUCE AN IMPROVED FURNACE CARBON BLACK FEED STOCK INCREASED YIELD.
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) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |