Patent US3001950A successfully refreshed from Google Patents.
US3001950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reagent for determining the amount of cholesterol in serum and method of preparing same
Assignee: Individual
•
Filing: 1958-08-18
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Granted: 1961-09-26
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Expires: 1978-08-18
Abstract
No abstract record available.
Inventors
- 👤 Quentin R Hopper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:05
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A REAGENT FOR DETERMINING THE AMOUNT OF CHOLESTEROL IN BLOOD SERUM CONSISTING ESSENTIALLY OF, BETWEEN APPROXIMATELY 4.5% AND 22.5% REANGENT GRANDE SULFURIC ACID BY VOLUME, AT LEAST APPROXIMATELY 1% REAGENT GRADE GLACIAL ACETIC ACID BY VOLUME, AND AT LEAST APPROXIMATELY 40% REAGENT GRADE ACETIC ANHYDRIDE BY VOLUME.
Claim 2
Dependent Claim
47 words
A REAGENT FOR DETERMINING THE AMOUNT OF CHOLESTEROL IN BLOOD SERUM CONSISTING ESSENTIALLY OF, BETWEEN APPROXIMATELY 4.5% AND 22.5% REANGENT GRANDE SULFURIC ACID BY VOLUME, AT LEAST APPROXIMATELY 1% REAGENT GRADE GLACIAL ACETIC ACID BY VOLUME, AND AT LEAST APPROXIMATELY 40% REAGENT GRADE ACETIC ANHYDRIDE BY VOLUME.
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) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |