US3720760A
Expired / Lapsed
US
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Method for determining the presence of reagin-immunoglobulins(reagin-ig)directed against certain allergens,in aqueous samples
Assignee: Pfizer Health AB
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Filing: 1968-09-06
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Granted: 1973-03-13
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Expires: 1988-09-06
Abstract
Abstract AN IN VITRO METHOD FOR ANALYZING A BODY FLUID FOR REAGIN-IMMUNOGLOBULINS THEREIN THAT ARE REACTIVE WITH ALLERGENS WHICH COMPRISES CONTACTING A SAMPLE OF BODY FLUID WITH A WATER-INSOLUBLE POLYMER TO WHICH IS ATTACHED AT LEAST ONE TEST ALLERGEN FOR A LONG ENOUGH TIME TO ALLOW REACTION THEREBETWEEN AND THEN CONTACTING WITH EITHER LABELLED ANTIBODIES THAT ARE REACTIVE WITH THE REAGIN IMMUNOGLOBULINS OR WITH ANTIBODIES AGAINST REAGIN-IG AND REAGIN-IG LABELLED WITH A RADIATION EMITTING ATOM OR GROUP, SEPARATING INTO A LIQUID PHASE AND A SOLID PHASE, AND MEASURING THE RADIATION EMITTED FROM AT LEAST ONE OF THE TWO SEPARATED PHASES.
Inventors
- 👤 Leif E Wide
- 👤 Hans H Bennich
- 👤 Stig G O Johansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:12
CPC Classifications
C; C07; C07K; C07K16/00; C07K16/42; C07K16/4283; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; G01N33/544; Y; Y10; Y10S; Y10S436/00; Y10S436/804; Y10S436/807
Claims Analysis
Total Claims: 0
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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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |