US2750264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon bisulfide retort
Assignee: Stauffer Chemical Co
•
Filing: 1952-08-21
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Granted: 1956-06-12
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Expires: 1972-08-21
Abstract
No abstract record available.
Inventors
- 👤 Iver C Macdougall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:56
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A CARBON BISULFIDE RETORT COMPRISING A FURNACE, AN OUTER TUBULAR VESSEL POSITIONED VERTICALLY IN SAID FURNACE FOR HEATING BY THE FURNACE, AN INLET ADJACENT THE BOTTOM OF SAID OUTER VESSEL FOR FEEDING SULFUR TO BE HEATED IN SAID OUTER VESSEL, AN INTERMEDIATE TUBULAR VESSEL POSITIONED VERTICALLY IN AND SPACED FROM SAID OUTER VESSEL AND OPEN AT ITS UPPER END TO ADMIT SULFUR VAPOR PASSING UPWARDLY IN THE SPACE BETWEEN SAID VESSELS TO THE INTERIOR OF SAID INTERMEDIATE VESSEL, AN ASH OUTLET ADJACENT THE BOTTOM OF THE INTERMEDIATE VESSEL, AN INNER TUBULAR SHELL SUPPORTED ADJACENT THE UPPER END OF THE OUTER TUBULAR VESSEL AND DEPENDING TO ADJACENT THE BOTTOM OF THE INTERMEDIATE VESSEL IN A SPACED WALL RELATIONSHIP TO SAID INTERMEDIATE VESSEL, AND A SEAL BETWEEN SAID INNER TUBULAR SHELL AND SAID OUTER TUBULAR VESSEL.
Claim 2
Dependent Claim
134 words
A CARBON BISULFIDE RETORT COMPRISING A FURNACE, AN OUTER TUBULAR VESSEL POSITIONED VERTICALLY IN SAID FURNACE FOR HEATING BY THE FURNACE, AN INLET ADJACENT THE BOTTOM OF SAID OUTER VESSEL FOR FEEDING SULFUR TO BE HEATED IN SAID OUTER VESSEL, AN INTERMEDIATE TUBULAR VESSEL POSITIONED VERTICALLY IN AND SPACED FROM SAID OUTER VESSEL AND OPEN AT ITS UPPER END TO ADMIT SULFUR VAPOR PASSING UPWARDLY IN THE SPACE BETWEEN SAID VESSELS TO THE INTERIOR OF SAID INTERMEDIATE VESSEL, AN ASH OUTLET ADJACENT THE BOTTOM OF THE INTERMEDIATE VESSEL, AN INNER TUBULAR SHELL SUPPORTED ADJACENT THE UPPER END OF THE OUTER TUBULAR VESSEL AND DEPENDING TO ADJACENT THE BOTTOM OF THE INTERMEDIATE VESSEL IN A SPACED WALL RELATIONSHIP TO SAID INTERMEDIATE VESSEL, AND A SEAL BETWEEN SAID INNER TUBULAR SHELL AND SAID OUTER TUBULAR VESSEL.
References Cited (Backward Citations)
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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) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |