US3412007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous flow electrophoresis apparatus
Assignee: Beckman Coulter Inc
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Filing: 1965-08-23
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Granted: 1968-11-19
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Expires: 1985-08-23
Abstract
No abstract record available.
Inventors
- 👤 Strickler Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:33
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44756; G01N27/44769
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
AN APPARATUS FOR CONTINUOUS FLOW ELECTROPHORESIS COMPRISING A PAIR OF SUBSTANTIALLY FLAT PLATES OF ELECTRICALLY INSULATING MATERIAL; MEANS SUPPORTING SAID PLATES IN SUBSTANTIALLY PARALLEL, FACE-TO-FACE RELATIONSHIP; SPACER MEANS FOR MAINTAINING A SEPARATION BETWEEN SAID PLATES AND DEFINING AN ELECTROPHORESIS WORKING SPACE THEREBETWEEN; MEANS FOR INTRODUCING AN ELECTROLYTE INTO SAID WORKING SPACE AT A FIRST POINT; MEANS FOR VENTING SAID ELECTROLYTE FROM SAID WORKING SPACE AT A SECOND POINT, SAID ELECTROLYTE FLOWING AS A LAMINAR FLOW SHEET IN SAID WORKING SPACE BETWEEN SAID FIRST AND SECOND POINTS; MEANS FOR INJECTING INTO SAID WORKING SPACE DOWNSTREAM OF SAID FIRST POINT, A SAMPLE TO BE ELECTROPHORETICALLY SEPARATED, SAID INJECTION MEANS BEING ADJUSTABLE POSITIONABLE WHEREBY SAID SAMPLE MAY BE INJECTED AT ANY SELECTED POINT ACROSS SAID FLOWING ELECTROLYTE SHEET; MEANS FOR REMOVING A SELECTED SAMPLE COMPONENT BAND FROM SAID WORKING SPACE AT A THIRD POINT, DOWNSTREAM OF SAID SAMPLE INJECTION POINT, SAID SAMPLE COMPONENT BAND REMOVED DEPENDING UPON THE POSITION OF SAID SAMPLE INJECTING MEANS; AND, MEANS FOR APPLYING AN ELECTRIC POTENTIAL GRADIENT ACROSS SAID WORKING SPACE.
Claim 2
Independent Claim
173 words
AN APPARATUS FOR CONTINUOUS FLOW ELECTROPHORESIS COMPRISING A PAIR OF SUBSTANTIALLY FLAT PLATES OF ELECTRICALLY INSULATING MATERIAL; MEANS SUPPORTING SAID PLATES IN SUBSTANTIALLY PARALLEL, FACE-TO-FACE RELATIONSHIP; SPACER MEANS FOR MAINTAINING A SEPARATION BETWEEN SAID PLATES AND DEFINING AN ELECTROPHORESIS WORKING SPACE THEREBETWEEN; MEANS FOR INTRODUCING AN ELECTROLYTE INTO SAID WORKING SPACE AT A FIRST POINT; MEANS FOR VENTING SAID ELECTROLYTE FROM SAID WORKING SPACE AT A SECOND POINT, SAID ELECTROLYTE FLOWING AS A LAMINAR FLOW SHEET IN SAID WORKING SPACE BETWEEN SAID FIRST AND SECOND POINTS; MEANS FOR INJECTING INTO SAID WORKING SPACE DOWNSTREAM OF SAID FIRST POINT, A SAMPLE TO BE ELECTROPHORETICALLY SEPARATED, SAID INJECTION MEANS BEING ADJUSTABLE POSITIONABLE WHEREBY SAID SAMPLE MAY BE INJECTED AT ANY SELECTED POINT ACROSS SAID FLOWING ELECTROLYTE SHEET; MEANS FOR REMOVING A SELECTED SAMPLE COMPONENT BAND FROM SAID WORKING SPACE AT A THIRD POINT, DOWNSTREAM OF SAID SAMPLE INJECTION POINT, SAID SAMPLE COMPONENT BAND REMOVED DEPENDING UPON THE POSITION OF SAID SAMPLE INJECTING MEANS; AND, MEANS FOR APPLYING AN ELECTRIC POTENTIAL GRADIENT ACROSS SAID WORKING SPACE.
References Cited (Backward Citations)
US2555487A
Cited
US2879217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |