Patent US2992979A successfully refreshed from Google Patents.
US2992979A
Expired / Lapsed
US
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Electrophoresis method and apparatus
Assignee: Labline Inc
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Filing: 1957-10-03
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Granted: 1961-07-18
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Expires: 1977-10-03
Abstract
No abstract record available.
Inventors
- 👤 Donald V Magnuson
- 👤 Hugh J Mcdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:47
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44756; G01N27/44773
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN ELECTROPHORESIS METHOD COMPRISING THE STEPS OF APPLYING A SUBSTANCE FOR FRACTIONATION TO AN OFF-THE-AXISOF-ROTATION PORTION OF A ROTATABLE FLAT SHEET OF ABSORBENT MATERIAL WETTED WITH A BUFFERS SOLUTION AND POSITION BETWEEN AND RESPECTIVELY SPACED FROM A PAIR OF SPACED MEMBERS WHICH SUBSTANTIALLY ENCLOSE THE SHEET, GENERATING A CENTRIGUGAL FORCE EFFECTIVE ON SAID APPLIED SUBSTANCE IN A SINGLE GENERAL DIRECTION RELATIVE TO THE SHEET BY RAPIDLY ROTATING THE SHEET ON AN AXIS PERPENDICULAR TO THE SHEET, SIMULTANEOUSLY APPLYING A DIRECT-CURRENT FIELD BETWEEN A PAIR OF SHEET MARGINS PARALLEL TO AND LYING ON OPPOSITE SIDES OF THE LINE BETWEEN THE AXIS OF ROTAION AND THE SHEET PORTION TO WHICH THE SUBSTANCE IS APPLIED AND COLLECTING THE FRACTIONS FOLLOWING SEPERATION.
Claim 2
Dependent Claim
118 words
AN ELECTROPHORESIS METHOD COMPRISING THE STEPS OF APPLYING A SUBSTANCE FOR FRACTIONATION TO AN OFF-THE-AXISOF-ROTATION PORTION OF A ROTATABLE FLAT SHEET OF ABSORBENT MATERIAL WETTED WITH A BUFFERS SOLUTION AND POSITION BETWEEN AND RESPECTIVELY SPACED FROM A PAIR OF SPACED MEMBERS WHICH SUBSTANTIALLY ENCLOSE THE SHEET, GENERATING A CENTRIGUGAL FORCE EFFECTIVE ON SAID APPLIED SUBSTANCE IN A SINGLE GENERAL DIRECTION RELATIVE TO THE SHEET BY RAPIDLY ROTATING THE SHEET ON AN AXIS PERPENDICULAR TO THE SHEET, SIMULTANEOUSLY APPLYING A DIRECT-CURRENT FIELD BETWEEN A PAIR OF SHEET MARGINS PARALLEL TO AND LYING ON OPPOSITE SIDES OF THE LINE BETWEEN THE AXIS OF ROTAION AND THE SHEET PORTION TO WHICH THE SUBSTANCE IS APPLIED AND COLLECTING THE FRACTIONS FOLLOWING SEPERATION.
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) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |