US3785929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diagnostic composition for the detection of nitrite
Assignee: Warner Lambert Co LLC
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Filing: 1971-11-30
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Granted: 1974-01-15
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Expires: 1991-11-30
Abstract
Abstract A DIAGNOSTIC COMPOSITION FOR THE DETECTION OF THE PRESENCE OF NITRITE COMPRISES A CARRIER MATERIAL IMPREGNATED IN A SPECIFIC ZONE WITH A DRIED FORM OF TWO STALE REAGENT SOLUTIONS. IN THE PREFERRED EMBODIMENT, THE CARRIER MATERIAL IS ALOS IMPREGNATED WITH A DRIED BARRIER COMPOSIAND AN IDENTIFYING DYE. IN USE, THE TWO ZONES CONTAINING THE REAGENTS ARE INSERTED INTO THE FLUID BEING TESTED AND THE PSITIVE PRESENCE OF NITRITE IS INDICATED IN 10 MINUTES OR LESS BY THE FORMATION OF COLOR IN THE REAGENT ZONES. THE DIAGNOSTIC COMPOSITION OF THIS INVENTION PROVIDES A RAPID, EASY-TO-USE METHOD FOR THE DETECTION OF THE PRESENCE OF BACTERIURIA.
Inventors
- 👤 D Kronish
- 👤 W Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:37
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/02; C12Q1/04; C12Q1/12; Y; Y10; Y10S; Y10S435/00; Y10S435/805
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |