US3409508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for analysis of urea in biological fluids
Assignee: NUCLCAR CHICAGO CORP
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Filing: 1966-01-26
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Granted: 1968-11-05
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Expires: 1986-01-26
Abstract
No abstract record available.
Inventors
- 👤 Leonard A Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:51
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/58
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
19 words
A REAGENT FOR UREA ANALYSIS COMPRISING A BUFFERED SOLUTION OF UREASE AND NITROFERRICYANIDE CONTAINING A STABILIZING AMOUNT OF GLYCOL.
References Cited (Backward Citations)
US3119751A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |