US2660518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-speed continuous extractor
Assignee: Pharmacia and Upjohn Co
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Filing: 1951-02-19
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Granted: 1953-11-24
•
Expires: 1971-02-19
Abstract
No abstract record available.
Inventors
- 👤 John L White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:14
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; G; G01; G01N; G01N25/00; G01N25/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
IN AN APPARATUS FOR CONTINUOUS EXTRACTION, A DEVICE COMPRISING: FIRST AND SECOND, SUBSTANTIALLY PARALLEL AND VERTICAL PIPES, SAID FIRST PIPE BEING OPEN AT BOTH ENDS AND SAID SECOND PIPE BEING OPEN AT ITS LOWER END AND CLOSED AT ITS UPPER END; A CONDENSER HAVING AN OUTER CASING AND AN INNER TUBE, SAID INNER TUBE COMMUNICATING AT ONE END WITH SAID SECOND PIPE AT ITS UPPER END AND COMMUNICATING AT ITS OTHER END WITH SAID FIRST PIPE NEAR ITS UPPER END, SAID INNER TUBE BEING SLOPED DOWNWARDLY FROM SAID SECOND PIPE TO SAID FIRST PIPE; A DRAIN PIPE BETWEEN SAID FIRST AND SECOND PIPES COMMUNICATING AT ONE END WITH SAID FIRST PIPE INTERMEDIATE ITS LOWER END AND SAID INNER TUBE AND EXTENDING THROUGH AN OPENING IN THE SIDEWALL OF SAID SECOND PIPE INTERMEDIATE ITS ENDS, SAID DRAIN PIPE BEING SECURED TO THE WALL OF SAID OPENING, BEING SLOPED DOWNWARDLY FROM SAID FIRST PIPE TO SAID SECOND PIPE AND HAVING A PORTION THEREOF COAXIALLY DISPOSED WITHIN AND SPACED FROM THE WALLS OF SAID SECOND PIPE AND EXTENDING THROUGH THE LOWER END THEREOF; AN
Claim 2
Dependent Claim
181 words
IN AN APPARATUS FOR CONTINUOUS EXTRACTION, A DEVICE COMPRISING: FIRST AND SECOND, SUBSTANTIALLY PARALLEL AND VERTICAL PIPES, SAID FIRST PIPE BEING OPEN AT BOTH ENDS AND SAID SECOND PIPE BEING OPEN AT ITS LOWER END AND CLOSED AT ITS UPPER END; A CONDENSER HAVING AN OUTER CASING AND AN INNER TUBE, SAID INNER TUBE COMMUNICATING AT ONE END WITH SAID SECOND PIPE AT ITS UPPER END AND COMMUNICATING AT ITS OTHER END WITH SAID FIRST PIPE NEAR ITS UPPER END, SAID INNER TUBE BEING SLOPED DOWNWARDLY FROM SAID SECOND PIPE TO SAID FIRST PIPE; A DRAIN PIPE BETWEEN SAID FIRST AND SECOND PIPES COMMUNICATING AT ONE END WITH SAID FIRST PIPE INTERMEDIATE ITS LOWER END AND SAID INNER TUBE AND EXTENDING THROUGH AN OPENING IN THE SIDEWALL OF SAID SECOND PIPE INTERMEDIATE ITS ENDS, SAID DRAIN PIPE BEING SECURED TO THE WALL OF SAID OPENING, BEING SLOPED DOWNWARDLY FROM SAID FIRST PIPE TO SAID SECOND PIPE AND HAVING A PORTION THEREOF COAXIALLY DISPOSED WITHIN AND SPACED FROM THE WALLS OF SAID SECOND PIPE AND EXTENDING THROUGH THE LOWER END THEREOF; AN
References Cited (Backward Citations)
US451816A
Cited
US2373646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |