Patent US2799660A successfully refreshed from Google Patents.
US2799660A
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US
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Blood test composition and method
Assignee: Bayer Corp
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Filing: 1954-04-15
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Granted: 1957-07-16
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Expires: 1974-04-15
Abstract
No abstract record available.
Inventors
- 👤 Richard S Nicholls
- 👤 Dale E Fonner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:39
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/72; G01N33/721; G01N33/725; G01N31/00; G01N31/22; Y; Y10; Y10S; Y10S436/00; Y10S436/904
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
A DIAGNOSTIC COMPOSITION IN TABLET FORM COMPRISING A MEMBER OF THE GROUP CONSISTING OF O-TOLIDINE, O-TOLUIOXIDE WHICH WILL LIBERATE HYDROGEN PEROXIDE, WATER DINE, BENZIDINE AND O-TOLUIDINE DIHYDROCHLORIDE, A PERSOLUBLE SOLID ACID STRONGER THAN ACETIC ACID AN ACETATE SALT WHICH WILL REACT WITH THE LAST SAID ACID TO PRODUCE ACETIC, ACID, AN EFFERVESCENT COUPLE, AND A WATER-SOLUBLE MATERIAL CONTRASTING IN COLOR WITH THE COLOR FORMED IN COMBINATION WITH BLOOD BY THE SELECTED MEMBER OF SAID GROUP.
References Cited (Backward Citations)
US2290436A
Cited
US2387244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |