Patent US3666421A successfully refreshed from Google Patents.
US3666421A
Expired / Lapsed
US
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Diagnostic test slide
Assignee: Organon NV
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Filing: 1971-04-05
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Granted: 1972-05-30
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Expires: 1991-04-05
Abstract
Abstract A TEST SLIDE FOR THE PERFORMANCE AND OBSERVATION OF AN IMMUNOCHEMICAL OR DIAGNOSTIC TEST ON ITS SURFACE, WHICH SURFACE IS INSOLUBLE IN, IMPERMEABLE TO, NON-ABSORBENT TO, AND WETTABLE BY, CARRIERS ON THE SURFACE AT LEAST ONE CIRCUMSCRIBED TEST AREA CONTAINING IN CLOSE PROXIMITY AT LEAST TWO DEPOSITED SOLID DRIED IMMUNOCHEMICAL RE- AGENTS PROVIDING AN ACCURATE PREDETERMINED AMOUNT OF AN ANTIGEN AND AN ANTIBODY, WHICH UPON MOISTENING WITH A LIQUID TO BE TESTED ARE RECONSTITUTED TO THE TEST REAGENTS AND THEN UNITED TO FORM A SPOT OF REACTION MIXTURE.
Inventors
- 👤 Richard Thompson Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:43
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; G01N33/551; G01N33/552; G01N33/54313; Y; Y10; Y10S; Y10S436/00; Y10S436/805; Y10S436/806; Y10S436/811; Y10S436/825; Y10S436/826
Claims Analysis
Total Claims: 0
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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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |