Patent USRE24187E successfully refreshed from Google Patents.
US2628892A
Expired / Lapsed
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Apparatus for fractional sublimation
Assignee: Individual
•
Filing: 1950-01-19
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Granted: 1953-02-17
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Expires: 1970-01-19
Abstract
No abstract record available.
Inventors
- 👤 Reid Allen Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:34
CPC Classifications
B; B01; B01D; B01D7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN APPARATUS FOR SEPARATING THE COMPONENTS OF A DIFFICULTY SEPARABLE, VAPORIZABLE MIXTURE, IN COMBINATION, A TUBE WOUND IN THE FORM OF A HELIX AND ROTATABLE ABOUT THE AXIS OF SAID HELIX, MEANS FOR INTRODUCING SAID MIXTURE INTO SAID TUBE, MEANS LONGITUDINALLY DISPOSED TO THE AXIS OF SAID HELIX FOR ESTABLISHING IN CORRESPONDING PORTIONS OF EACH OPERATIVE TURN OF SAID TUBE A ZONE OF RELATIVELY LOW TEMPERATURE ADAPTED TO CONDENSE SAID MIXTURE, SEPARATE MEANS LONGITUDINALLY DISPOSED WITH RESPECT TO THE AXIS OF SAID HELIX FOR ESTABLISHING IN EACH SAID OPERATIVE TURN OF SAID TUBE A ZONE OF RELATIVELY HIGH TEMERATURE ADAPTED TO VAPORIZE SAID MIXTURE, SAID CONDENSING AND VAPORIZING MEANS BEING SPACED CIRCUMFERENTIALLY ABOUT SAID HELIX AND EXTENDING LONGITUDINALLY THEREOF, AND MEANS FOR ROTATING SAID TUBE.
Claim 2
Dependent Claim
125 words
IN APPARATUS FOR SEPARATING THE COMPONENTS OF A DIFFICULTY SEPARABLE, VAPORIZABLE MIXTURE, IN COMBINATION, A TUBE WOUND IN THE FORM OF A HELIX AND ROTATABLE ABOUT THE AXIS OF SAID HELIX, MEANS FOR INTRODUCING SAID MIXTURE INTO SAID TUBE, MEANS LONGITUDINALLY DISPOSED TO THE AXIS OF SAID HELIX FOR ESTABLISHING IN CORRESPONDING PORTIONS OF EACH OPERATIVE TURN OF SAID TUBE A ZONE OF RELATIVELY LOW TEMPERATURE ADAPTED TO CONDENSE SAID MIXTURE, SEPARATE MEANS LONGITUDINALLY DISPOSED WITH RESPECT TO THE AXIS OF SAID HELIX FOR ESTABLISHING IN EACH SAID OPERATIVE TURN OF SAID TUBE A ZONE OF RELATIVELY HIGH TEMERATURE ADAPTED TO VAPORIZE SAID MIXTURE, SAID CONDENSING AND VAPORIZING MEANS BEING SPACED CIRCUMFERENTIALLY ABOUT SAID HELIX AND EXTENDING LONGITUDINALLY THEREOF, AND MEANS FOR ROTATING SAID TUBE.
References Cited (Backward Citations)
CH87654A
Cited
US1589373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |