US3578604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of mixed gels of acrylamide and agarose or agar-agar
Assignee: Centre National de la Recherche Scientifique
•
Filing: 1966-11-29
•
Granted: 1971-05-11
•
Expires: 1986-11-29
Abstract
Abstract MIXED GELS OF ACRYLAMIDE AND A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF AGAROSE AND AGAR-AGAR, WHICH GELS'' ARE ESPECIALLY SUITABLE IN THE ELECTROPHORETIC SEPARATION OF NATURAL PRODUCTS AS MOLECUALR SIEVES AND FILTERS, ARE PREPARED BY PROVIDING HEATED, BUFFERED SOLUTIONS OF (1) MELTED AGAROSE OF AGAR-AGAR, AND (2) ACRYLAMIDE WITH N,N''-METHYLENE-BISACRYLAMIDE, ADDING AMMONIUM PERSULFATE AND N,N''N'',-TETRAMETHYL-ETHYLENE DIAMINE TO SOLUTION (1), RAPIDLY MIXING SO-TREATED SOLUTION (1) AND SOLUTION (2), IMMEDIATELY CASTING THE MIXTURE IN AN OVEN AT A TEMPERATURE ABOVE 50*C ., AND LETTING THE ACRYLAMIDE GEL FORM AND COOL TO ROOM TEMPERATURE.
Inventors
- 👤 Jose Uriel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:32
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44704; G01N27/44747; B; B01; B01J; B01J20/00; B01J20/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |