US3074853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Serological test card with color solid as visualizing agent
Assignee: Hynson Westcott and Dunning Inc
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Filing: 1961-06-22
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Granted: 1963-01-22
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Expires: 1981-06-22
Abstract
No abstract record available.
Inventors
- 👤 John H Brewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:45
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; G01N33/551; Y; Y10; Y10S; Y10S436/00; Y10S436/805; Y10S436/807
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A METHOD OF CARRYING OUT AN IMMUNOLOGICAL TEST WHICH COMPRISES FORMING AND SPREADING A MIXTURE OF A FINELY DIVIDED ADDED SOLID AND TWO LIQUIDS TO BE TESTED FOR ANTIGEN-ANTIBODY REACTION IN A TEST SPOT ON A SUBSTANTIALLY PLANE SOLID SHEET HAVING A SMOOTH WETTABLE SURFACE OF A CONTACTING COLOR WITH RESPECT TO SAID SOLID AND EXAMINING SAID SPOT FOR VISUAL EVIDENCE OF THE AGGLOMERATION OF SAID SOLID, SAID ADDED SOLID BEING CHEMICALLY INERT TO AND INSOLUBLE IN SAID LIQUIDS.
Claim 2
Independent Claim
79 words
A METHOD OF CARRYING OUT AN IMMUNOLOGICAL TEST WHICH COMPRISES FORMING AND SPREADING A MIXTURE OF A FINELY DIVIDED ADDED SOLID AND TWO LIQUIDS TO BE TESTED FOR ANTIGEN-ANTIBODY REACTION IN A TEST SPOT ON A SUBSTANTIALLY PLANE SOLID SHEET HAVING A SMOOTH WETTABLE SURFACE OF A CONTACTING COLOR WITH RESPECT TO SAID SOLID AND EXAMINING SAID SPOT FOR VISUAL EVIDENCE OF THE AGGLOMERATION OF SAID SOLID, SAID ADDED SOLID BEING CHEMICALLY INERT TO AND INSOLUBLE IN SAID LIQUIDS.
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |