Patent US2590660A successfully refreshed from Google Patents.
US2590660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the manufacture of carbon black
Assignee: United Carbon Co Inc
•
Filing: 1949-03-02
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Granted: 1952-03-25
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Expires: 1969-03-02
Abstract
No abstract record available.
Inventors
- 👤 Robert W Skoog
- 👤 Drogin Isaac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:22
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A FURANCE FOR PRODUCING CARBON BLACK FROM HYDROCARBONS COMPRISING A CYLINDRICAL REFRACTORY-LINED REACTION CHAMBER HAVING A FLUE OUTLET AT ONE END AND AN AXIALLY DISPOSED HYDROCARBON INLET AT THE OTHER END, A PLURALITY OF AIR INLET DUCTS LOCATED AT SAID OTHER END AND CONCENTRICALLY DISPOSED WITH RESPECT TO SAID HYDROCARBON INLET, AN ANNULUS NORMAL TO THE AXIS AND INTERMEDIATE THE ENDS OF THE REACTION CHAMBER FORMING A MIXTURE ORIFICE, AND AN AUXILIARY CHAMBER FORMED IN THE SIDE WALL OF SAID REACTION CHAMBER AND HAVING A DISCHARGE OUTLET COMMUNICATIN WITH THE INTERIOR OF THE LATTER INTERMEDIATE THE INLET END AND THE ANNULUS OF SAID REACTION CHAMBER, SAID AUXILIARY CHAMBER HAVING A REFRACTORY CHECKER MEMBER IN ITS DISCHARGE OUTLET
Claim 2
Dependent Claim
117 words
A FURANCE FOR PRODUCING CARBON BLACK FROM HYDROCARBONS COMPRISING A CYLINDRICAL REFRACTORY-LINED REACTION CHAMBER HAVING A FLUE OUTLET AT ONE END AND AN AXIALLY DISPOSED HYDROCARBON INLET AT THE OTHER END, A PLURALITY OF AIR INLET DUCTS LOCATED AT SAID OTHER END AND CONCENTRICALLY DISPOSED WITH RESPECT TO SAID HYDROCARBON INLET, AN ANNULUS NORMAL TO THE AXIS AND INTERMEDIATE THE ENDS OF THE REACTION CHAMBER FORMING A MIXTURE ORIFICE, AND AN AUXILIARY CHAMBER FORMED IN THE SIDE WALL OF SAID REACTION CHAMBER AND HAVING A DISCHARGE OUTLET COMMUNICATIN WITH THE INTERIOR OF THE LATTER INTERMEDIATE THE INLET END AND THE ANNULUS OF SAID REACTION CHAMBER, SAID AUXILIARY CHAMBER HAVING A REFRACTORY CHECKER MEMBER IN ITS DISCHARGE OUTLET
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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) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |