Patent US2809924A successfully refreshed from Google Patents.
US2809924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for fractionally distilling composite liquids
Assignee: Foster Wheeler Inc
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Filing: 1953-11-06
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Granted: 1957-10-15
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Expires: 1973-11-06
Abstract
No abstract record available.
Inventors
- 👤 John F Middleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:14
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN DISTILLATION APPARTUS OF THE CLASS DESCRIBED, FRACTIONATING TOWER HAVING A RECTIFYING SECTION WITH LIQUID REFLUX THEREIN, A STRIPPING SECTION DISPOSED WITHIN SAID TOWER AN IN SPACED RELATIONSHIP WITH SAID RECTIFYING SECTION, A SEPARATION SECTION DISPOSED IN SAID TOWER, MEANS INCLUDING A DISCHARGE ORIFICE FOR INTRODUCING HEATED FEED STOCK INTO SAID SEPARATION SECTION AT A TEMPERATURE SUFFICIENT TO CAUSE VAPORIZATION AND SEPARATION OF THE LIQUID AND VAPOR PHASES OF THE FEED STOCK IN THE SEPARATION SECTION, MEANS FOR INTRODUCING A HEATED STRIPPING MEDIUM INTO SAID STRIPPING SECTION, MEANS FOR CONDUCTING THE LIQUID REFLUX FROM THE RECTIFYING SECTION INTO THE STRIPPIONG
Claim 2
Dependent Claim
100 words
IN DISTILLATION APPARTUS OF THE CLASS DESCRIBED, FRACTIONATING TOWER HAVING A RECTIFYING SECTION WITH LIQUID REFLUX THEREIN, A STRIPPING SECTION DISPOSED WITHIN SAID TOWER AN IN SPACED RELATIONSHIP WITH SAID RECTIFYING SECTION, A SEPARATION SECTION DISPOSED IN SAID TOWER, MEANS INCLUDING A DISCHARGE ORIFICE FOR INTRODUCING HEATED FEED STOCK INTO SAID SEPARATION SECTION AT A TEMPERATURE SUFFICIENT TO CAUSE VAPORIZATION AND SEPARATION OF THE LIQUID AND VAPOR PHASES OF THE FEED STOCK IN THE SEPARATION SECTION, MEANS FOR INTRODUCING A HEATED STRIPPING MEDIUM INTO SAID STRIPPING SECTION, MEANS FOR CONDUCTING THE LIQUID REFLUX FROM THE RECTIFYING SECTION INTO THE STRIPPIONG
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) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |