US3706661A
Expired / Lapsed
US
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Method for the separation of cells from solutes accompanying said cells
Assignee: HERBERT J BERMAN
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Filing: 1970-10-05
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Granted: 1972-12-19
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Expires: 1990-10-05
Abstract
Abstract D R A W I N G A GEL FILTRATION METHOD IS APPLIED TO SEPARATE CELLS FROM THE SOLUTES PRESENT IN THEIR SURROUNDING MEDIUM. THE SEPARATION IS ACCOMPLISHED BY PASSING THE CELLS THROUGH A COLUMN PACKED WITH A GEL WHICH RETAINS ALL UNDERSIRED COMPONENTS, AND AT THE SAME TIME ALLOWS THE CELLS TO PASS THROUGH THE GEL BED MORE RAPIDLY. FOR CLINICAL OR OTHER PURPOSE THE PROCEDURE CAN BE PERFORMED UNDER STERILE CONDITIONS.
Inventors
- 👤 Oddvar Tangen
- 👤 Herbert J Berman
- 👤 Peter Marfey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:54
CPC Classifications
A; A61; A61B; A61B10/00; B; B01; B01J; B01J20/00; B01J20/22; G; G01; G01N; G01N33/00; G01N33/48; Y; Y10; Y10T; Y10T436/00; Y10T436/25; Y10T436/25375
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |