US3342556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for manufacturing carbon black
Assignee: Continental Carbon Co
•
Filing: 1964-08-20
•
Granted: 1967-09-19
•
Expires: 1984-08-20
Abstract
No abstract record available.
Inventors
- 👤 Theodore A Ruble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:25
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; B; B01; B01J; B01J19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN A FURNACE PROCESS FOR MANUFACTURE OF CARBON BLACK WHEREIN A CARBON BLACK PRODUCING HYDROCARBON FEEDSTOCK IS CONTINUOUSLY INTRODUCED INTO A TURBULENT BURNING MIXTURE OF FUEL GAS AND AIR AT ONE END OF AN ELONGATED REACTION ZONE TO PRODUCE A REACTION ZONE EFFLUENT OF CARBON BLACK SUSPENDED IN BY-PRODUCT COMBUSTION AND DISSOCIATION GASES FROM WHICH THE CARBON BLACK IS SUBSEQUENTLY REMOVED; THE IMPROVEMENT OF CONTINUOUSLY VAPOR STRIPPING A LIQUID HYDROCARBON MIXTURE HAVING A CARBON-TO-HYDROGEN RATIO OF FROM ABOUT 0.75 TO ABOUT 1.25, AN API GRAVITY LESS THAN ABOUT 30, A MEAN MOLECULAR WEIGHT OF FROM ABOUT 140 TO ABOUT 550, AND HAVING LESS THAN ABOUT 40 WEIGHT PERCENT OF THE HYDROCARBON MIXTURE BOILING BELOW 550*F.; THEN INTRODUCING THE VAPOROUS OVERHEAD FROM SAID VAPOR STRIPPING STEP AS FUEL GS INTO SAID REACTION ZONE WHILE SIMULTANEOUSLY CHARGING TO SAID REACTION ZONE THE STRIPPED LIQUID HYDROCARBON MIXTURE AS SAID FEEDSTOCK.
Claim 2
Dependent Claim
147 words
IN A FURNACE PROCESS FOR MANUFACTURE OF CARBON BLACK WHEREIN A CARBON BLACK PRODUCING HYDROCARBON FEEDSTOCK IS CONTINUOUSLY INTRODUCED INTO A TURBULENT BURNING MIXTURE OF FUEL GAS AND AIR AT ONE END OF AN ELONGATED REACTION ZONE TO PRODUCE A REACTION ZONE EFFLUENT OF CARBON BLACK SUSPENDED IN BY-PRODUCT COMBUSTION AND DISSOCIATION GASES FROM WHICH THE CARBON BLACK IS SUBSEQUENTLY REMOVED; THE IMPROVEMENT OF CONTINUOUSLY VAPOR STRIPPING A LIQUID HYDROCARBON MIXTURE HAVING A CARBON-TO-HYDROGEN RATIO OF FROM ABOUT 0.75 TO ABOUT 1.25, AN API GRAVITY LESS THAN ABOUT 30, A MEAN MOLECULAR WEIGHT OF FROM ABOUT 140 TO ABOUT 550, AND HAVING LESS THAN ABOUT 40 WEIGHT PERCENT OF THE HYDROCARBON MIXTURE BOILING BELOW 550*F.; THEN INTRODUCING THE VAPOROUS OVERHEAD FROM SAID VAPOR STRIPPING STEP AS FUEL GS INTO SAID REACTION ZONE WHILE SIMULTANEOUSLY CHARGING TO SAID REACTION ZONE THE STRIPPED LIQUID HYDROCARBON MIXTURE AS SAID FEEDSTOCK.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |