Patent US3501743A successfully refreshed from Google Patents.
Patent US2801157A successfully refreshed from Google Patents.
US2801157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and furnace for the production of carbon black
Assignee: Godfrey L Cabot Inc
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Filing: 1955-03-31
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Granted: 1957-07-30
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Expires: 1975-03-31
Abstract
No abstract record available.
Inventors
- 👤 Earnest D Campbell
- 👤 George F Friauf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:27
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
THE PROCESS OF MAKING CARBON BLACK, WHICH COMPRISES THE STEPS OF INJECTING AN OIL SPRAY INTO A COMBUSTION SPACE, SURROUNDING THE OIL SPRAY WITH A WHIRLING BURNING MIXTURE OF OIL AND FUEL GAS, AND DIRECTION INTO THE SAID MIXTURE A PLURALITY OF FUEL GAS JETS DESPOSED IN A RING AND ALL CONVERGING TOWARD THE AXIS OF THE WHIRLING MIXTURE.
Claim 2
Dependent Claim
59 words
THE PROCESS OF MAKING CARBON BLACK, WHICH COMPRISES THE STEPS OF INJECTING AN OIL SPRAY INTO A COMBUSTION SPACE, SURROUNDING THE OIL SPRAY WITH A WHIRLING BURNING MIXTURE OF OIL AND FUEL GAS, AND DIRECTION INTO THE SAID MIXTURE A PLURALITY OF FUEL GAS JETS DESPOSED IN A RING AND ALL CONVERGING TOWARD THE AXIS OF THE WHIRLING MIXTURE.
Claim 3
Dependent Claim
80 words
A FURNACE FOR THE PRODUCTION OF CARBON BLACK COMPRISING AN ELONGATED CYLINDRICAL COMBUSTION CHAMBER HAVING AN INLET WALL APERTURED TO PROVIDE A CENTRALLY DISPOSED THROAT, AN INJECTION NOZZLE CONCENTRICALLY DISPOSED IN THE THROAT FOR DELIVERING AN ATOMIZED SPRAY OF OIL TO THE COMBUSTION CHAMBER, AND A SERIES OF AUXILIARY PIPE NIPPLE GAS BURNER SPACED IN A RING AT A DISTANCE FROM SAID NOZZLE, ALL BEING DIRECTED INTO THE FURNACE THROAT AND CONVERGING TOWARDS THE CENTER LINE OF THE COMBUSTION CHAMBER.
Claim 4
Dependent Claim
80 words
A FURNACE FOR THE PRODUCTION OF CARBON BLACK COMPRISING AN ELONGATED CYLINDRICAL COMBUSTION CHAMBER HAVING AN INLET WALL APERTURED TO PROVIDE A CENTRALLY DISPOSED THROAT, AN INJECTION NOZZLE CONCENTRICALLY DISPOSED IN THE THROAT FOR DELIVERING AN ATOMIZED SPRAY OF OIL TO THE COMBUSTION CHAMBER, AND A SERIES OF AUXILIARY PIPE NIPPLE GAS BURNER SPACED IN A RING AT A DISTANCE FROM SAID NOZZLE, ALL BEING DIRECTED INTO THE FURNACE THROAT AND CONVERGING TOWARDS THE CENTER LINE OF THE COMBUSTION CHAMBER.
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) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |