US2597233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of carbon black
Assignee: Columbian Carbon Co
•
Filing: 1950-08-25
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Granted: 1952-05-20
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Expires: 1970-08-25
Abstract
No abstract record available.
Inventors
- 👤 Wesley C Ekholm
- 👤 George L Heller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:04
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
APPARATUS OF THE TYPE DESCRIBED COMPRISING AN ELONGATED REACTION CHAMBER OF SUBSTANTIAL RECTANGULAR CROSS-SECTION NOT EXCEEDING 1 1/2 FEET IN WIDTH AND OF A GREATER HEIGHT THAN WIDTH, A BLAST BURNER POSITIONED AT ONE END THEREOF AND COMPRISING A RECTANGULAR BURNER BLOCK SUBSTANTIALLY COEXTENSIVE WITH THE TRANSVERSE AREA OF THE CHAMBER AND PROVIDED WITH A PLURALITY OF BURNER PORTS UNIFORMLY SPACED OVER THE ENTIRE FACE OF THE BURNER BLOCK, A PLURALITY OF MAKE GAS INJECTION TUBES VERTICALLY SPACED ALONG OPPOSITE SIDES OF THE CHAMBER, NEAR AND EQUI-DISTANT FROM THE BURNER END THEREOF, THE TUBES BEING UNCONSTRICTED AT THEIR INNER ENDS AND BEING DIRECTED ACROSS THE WIDTH OF THE CHAMBER, EACH BEING SUBSTANTIALLY PERPENDICULAR TO THE OPPOSITE SIDE WALL OF THE CHAMBER AND EACH BEING DIRECTLY OPPOSITE A CORRESPONDING TUBE ENTERING THE CHAMBER THROUGH THE OPPOSITE SIDE WALL.
Claim 2
Dependent Claim
137 words
APPARATUS OF THE TYPE DESCRIBED COMPRISING AN ELONGATED REACTION CHAMBER OF SUBSTANTIAL RECTANGULAR CROSS-SECTION NOT EXCEEDING 1 1/2 FEET IN WIDTH AND OF A GREATER HEIGHT THAN WIDTH, A BLAST BURNER POSITIONED AT ONE END THEREOF AND COMPRISING A RECTANGULAR BURNER BLOCK SUBSTANTIALLY COEXTENSIVE WITH THE TRANSVERSE AREA OF THE CHAMBER AND PROVIDED WITH A PLURALITY OF BURNER PORTS UNIFORMLY SPACED OVER THE ENTIRE FACE OF THE BURNER BLOCK, A PLURALITY OF MAKE GAS INJECTION TUBES VERTICALLY SPACED ALONG OPPOSITE SIDES OF THE CHAMBER, NEAR AND EQUI-DISTANT FROM THE BURNER END THEREOF, THE TUBES BEING UNCONSTRICTED AT THEIR INNER ENDS AND BEING DIRECTED ACROSS THE WIDTH OF THE CHAMBER, EACH BEING SUBSTANTIALLY PERPENDICULAR TO THE OPPOSITE SIDE WALL OF THE CHAMBER AND EACH BEING DIRECTLY OPPOSITE A CORRESPONDING TUBE ENTERING THE CHAMBER THROUGH THE OPPOSITE SIDE WALL.
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) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |