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US3546131A
Expired / Lapsed
US
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Stabilized cyanmethemoglobin reagent containing ferricyanide,cyanide and polyvinylpyrrolidone
Assignee: Uni Tech Chemical Manufacturing Co
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Filing: 1968-07-05
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Granted: 1970-12-08
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Expires: 1988-07-05
Abstract
No abstract record available.
Inventors
- 👤 Harold Stern
- 👤 John E Reardon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:36
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/72; G01N33/721
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3298789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |