US3421998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophoresis apparatus with membrane strip holding means
Assignee: Individual
•
Filing: 1966-02-18
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Granted: 1969-01-14
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Expires: 1986-02-18
Abstract
No abstract record available.
Inventors
- 👤 Stanley Yallen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:28
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44704
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
AN ELECTROPHORESIS CHAMBER COMPRISING THE COMBINATION OF: A TRAY SEPARATED INTO TWO SECTIONS BY A DIVIDING WALL EXTENDING UPWARDLY FROM THE BOTTOM THEREOF, EACH SAID SECTIONS BEING SUITABLY DIMENSIONED TO CONTAIN A DESIRED MEASURE OF BUFFER SOLUTION; STATIONARY SUPPORT MEANS IN EACH SAID SECTIONS SPACED LATERALLY FROM SAID DIVIDING WALL, SAID SUPPORT MEANS EXTENDING UPWARDLY TO A LEVEL ABOVE THAT OF THE TOP OF SAID DIVIDING WALL; AND, A PLURALITY OF RESILIENT HOLDING MEANS DISPOSED LATERALLY FROM EACH OF SAID SUPPORT MEANS ON THE SIDES OF SAID SUPPORT MEANS REMOTE FROM THE DIVIDING WALL, SAID HOLDING MEANS EXTENDING UPWARDLY FROM THE BOTTOM OF SAID TRAY AND BEING ADAPTED TO BE DEFLECTED TO AN OPERATIVE POSITION COOPERATING WITH SAID SUPPORT MEANS IN SECURING AT LEAST ONE MEMBRANE STRIP IN A TAUT POSITION EXTENDING TRANSVERSELY OVER SAID DIVIDING WALL, THE STRIP WHEN IN SAID TAUT POSITION BEING SPACED VERTICALLY ABOVE SAID DIVIDING WALL WITH ITS END IMMERSED IN THE BUFFER SOLUTION CONTAINED IN EACH SAID SECTIONS.
Claim 2
Dependent Claim
164 words
AN ELECTROPHORESIS CHAMBER COMPRISING THE COMBINATION OF: A TRAY SEPARATED INTO TWO SECTIONS BY A DIVIDING WALL EXTENDING UPWARDLY FROM THE BOTTOM THEREOF, EACH SAID SECTIONS BEING SUITABLY DIMENSIONED TO CONTAIN A DESIRED MEASURE OF BUFFER SOLUTION; STATIONARY SUPPORT MEANS IN EACH SAID SECTIONS SPACED LATERALLY FROM SAID DIVIDING WALL, SAID SUPPORT MEANS EXTENDING UPWARDLY TO A LEVEL ABOVE THAT OF THE TOP OF SAID DIVIDING WALL; AND, A PLURALITY OF RESILIENT HOLDING MEANS DISPOSED LATERALLY FROM EACH OF SAID SUPPORT MEANS ON THE SIDES OF SAID SUPPORT MEANS REMOTE FROM THE DIVIDING WALL, SAID HOLDING MEANS EXTENDING UPWARDLY FROM THE BOTTOM OF SAID TRAY AND BEING ADAPTED TO BE DEFLECTED TO AN OPERATIVE POSITION COOPERATING WITH SAID SUPPORT MEANS IN SECURING AT LEAST ONE MEMBRANE STRIP IN A TAUT POSITION EXTENDING TRANSVERSELY OVER SAID DIVIDING WALL, THE STRIP WHEN IN SAID TAUT POSITION BEING SPACED VERTICALLY ABOVE SAID DIVIDING WALL WITH ITS END IMMERSED IN THE BUFFER SOLUTION CONTAINED IN EACH SAID SECTIONS.
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) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |