US3033651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making carbon black
Assignee: CONTIENTAL CARBON Co
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Filing: 1959-01-16
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Granted: 1962-05-08
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Expires: 1979-01-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Burton F Latham
- 👤 Theodore A Ruble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:12
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; B; B01; B01J; B01J19/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
77 words
THE METHOD OF MAKING CARBON BLACK WHICH INCLUDES: CONTINUOUSLY ESTABLISHING A SWIRLING, TURBULENT MIXTURE OF FUEL GAS AND COMBUSTION AIR WITHIN A SUBSTANTIALLY UNOBSTRUCTED CYLINDRICAL FIRST ZONE BY INJECTING A FUEL GAS INTO PREHEATED AIR IN SAID FIRST ZONE; IGNITING SAID MIXTURE WHILE IN SAID FIRST ZONE; PASSING THE BURNING MIXTURE INTO A SECOND ZONE COMPRISING AN ELONGATED METALLIC FINTUBE IN AXIAL ALIGNMENT AND IN OPEN COMMUNICATION WITH SAID FIRST ZONE; INJECTING A CARBON BLACK PRODUCING FEED-
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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) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |