US3630958A
Expired / Lapsed
US
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Test composition and method for detecting reducing sugars in aqueous fluids
Assignee: Bayer Corp
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Filing: 1968-12-19
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Granted: 1971-12-28
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Expires: 1988-12-19
Abstract
Abstract TEST COMPOSITION AND METHOD FOR DETECTING REDUCING SUGARS IN AQUEOUS BIOCHEMICAL AND INDUSTRIAL FLUIDS COMPRISING A DRY SOLID MIXTURE OF AN ACID MATERIAL, AN ALKALINE MATERIAL, A CUPRIC SALT AND A SURFACE ACTIVE AGENT CAPABLE OF FORMING A SUBSTANTIALLY MONMOMOLECULAR FILM AT THE LIQUID-VAPOR INTERPHASE OF THE FLUID BEING TESTED.
Inventors
- 👤 Helen Mae Free
- 👤 John Robert Wisler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:17
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/66; Y; Y10; Y10T; Y10T436/00; Y10T436/14; Y10T436/142222; Y10T436/143333; Y10T436/144444
Claims Analysis
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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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |