Patent US2939770A successfully refreshed from Google Patents.
US2939770A
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Reaction column for the continuous treatment of liquids
Assignee: Noblee and Thoerl GmbH
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Filing: 1955-08-03
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Granted: 1960-06-07
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Expires: 1975-08-03
Abstract
No abstract record available.
Inventors
- 👤 Schwartzkopff Fritz Erich
- 👤 Eger Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:21
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/20; C; C11; C11B; C11B3/00; C11B3/02; C11B3/06; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094; Y; Y10; Y10S; Y10S159/00; Y10S159/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
REACTION COLUMN FOR THE CONTINUOUS TREATMENT OF LIQUIDS, SUCH AS FATS AND OILS, COMPRISING AN ELONGATED, ENCLOSED CONTAINER, MEANS FOR INTRODUCING AND WITHDRAWING LIQUID FROM SAID CONTAINER, A ROTATABLE HELIX EXTENDING SUBSTANTIALLY AXIALLY WITHIN SAID CONTAINER AND SUBDIVIDED INTO ADJACENT PORTIONS OF REVERSED PITCH, AND MEANS FOR ROTATING SAID HELIX, AND INCLUDING POSITIONED WITHIN THE SAID CONTAINER BETWEEN THE CONTAINER WALL AND SAID ROTATABLE HELIX A STATIONARY HELIX, SAID STATIONARY HELIX HAVING THE SAME AXIAL LENGTH AND A PITCH, WHICH IS ALTERNATELY REVERSED ALONG ITS LENGTH IN THE SAME MANNER AS THE ROTATABLE HELIX, SAID STATIONARY HELIX BEIG POSITIONED SO THAT ITS PITCH IS OPPOSED TO THE CORRESPONDING SECTION OF THE ROTATING HELIX.
Claim 2
Dependent Claim
113 words
REACTION COLUMN FOR THE CONTINUOUS TREATMENT OF LIQUIDS, SUCH AS FATS AND OILS, COMPRISING AN ELONGATED, ENCLOSED CONTAINER, MEANS FOR INTRODUCING AND WITHDRAWING LIQUID FROM SAID CONTAINER, A ROTATABLE HELIX EXTENDING SUBSTANTIALLY AXIALLY WITHIN SAID CONTAINER AND SUBDIVIDED INTO ADJACENT PORTIONS OF REVERSED PITCH, AND MEANS FOR ROTATING SAID HELIX, AND INCLUDING POSITIONED WITHIN THE SAID CONTAINER BETWEEN THE CONTAINER WALL AND SAID ROTATABLE HELIX A STATIONARY HELIX, SAID STATIONARY HELIX HAVING THE SAME AXIAL LENGTH AND A PITCH, WHICH IS ALTERNATELY REVERSED ALONG ITS LENGTH IN THE SAME MANNER AS THE ROTATABLE HELIX, SAID STATIONARY HELIX BEIG POSITIONED SO THAT ITS PITCH IS OPPOSED TO THE CORRESPONDING SECTION OF THE ROTATING HELIX.
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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) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |