US2774655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for purifying raw sulphur
Assignee: Montedison SpA
•
Filing: 1952-05-23
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Granted: 1956-12-18
•
Expires: 1972-05-23
Abstract
No abstract record available.
Inventors
- 👤 Marullo Gerlando
- 👤 Maragliano Domenico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:39
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/0232
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN APPARATUS FOR PURIFYING RAW SULPHUR, A HOLLOW DRUM, SUPPORTS FOR SAID DRUM TO HOLD IT IN A POSITION INCLINED WITH RESPECT TO THE HORIZONTAL, INLET AND OUTLET MEANS FOR PASSING MOLTEN SULPHUR THROUGH THE LOWER HALF OF SAID DRUM, INLET AND OUTLET MEANS FOR PASSING AN SO3-GAS CURRENT THROUGH THE UPPER HALF OF SAID DRUM IN COUNTERCURRENT RELATIONSHIP TO THE MOLTEN SULPHUR, A ROTARY SHAFT PASSING THROUGH SAID DRUM ALONG ITS AXIS, SEAL BEARINGSD FOR SAID SHAFT AT BOTH HEADS OF SAID DRUM, MEANS OR ROTATING SAID SHAFT A PLURALITY OF SPACED RADIALLY ARRANGED BAFFLES MOUNTED IN AND DIVIDING THE LOWER PART OF SAID DRUM INTO A NUMBER OF IMPERFORATE-WALLED COM-
Claim 2
Dependent Claim
112 words
IN APPARATUS FOR PURIFYING RAW SULPHUR, A HOLLOW DRUM, SUPPORTS FOR SAID DRUM TO HOLD IT IN A POSITION INCLINED WITH RESPECT TO THE HORIZONTAL, INLET AND OUTLET MEANS FOR PASSING MOLTEN SULPHUR THROUGH THE LOWER HALF OF SAID DRUM, INLET AND OUTLET MEANS FOR PASSING AN SO3-GAS CURRENT THROUGH THE UPPER HALF OF SAID DRUM IN COUNTERCURRENT RELATIONSHIP TO THE MOLTEN SULPHUR, A ROTARY SHAFT PASSING THROUGH SAID DRUM ALONG ITS AXIS, SEAL BEARINGSD FOR SAID SHAFT AT BOTH HEADS OF SAID DRUM, MEANS OR ROTATING SAID SHAFT A PLURALITY OF SPACED RADIALLY ARRANGED BAFFLES MOUNTED IN AND DIVIDING THE LOWER PART OF SAID DRUM INTO A NUMBER OF IMPERFORATE-WALLED COM-
References Cited (Backward Citations)
US2445919A
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US1704796A
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DE547693C
Cited
US1778571A
Cited
US1967874A
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US1958666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |