Patent US3947378A successfully refreshed from Google Patents.
US3947378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorbed plasma
Assignee: Warner Lambert Co LLC
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Filing: 1974-12-23
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Granted: 1976-03-30
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Expires: 1994-12-23
Abstract
Abstract The present invention relates to an improved process for the production of a deficient citrated plasma useful in the clinical laboratory as a control plasma for the testing of clotting function, and particularly, in patients who are on oral anticoagulant thereapy.
Inventors
- 👤 Arthur L. Babson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:56
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/96; G01N2496/00; G01N2496/05; Y; Y10; Y10T; Y10T436/00; Y10T436/10; Y10T436/106664; Y10T436/107497; Y10T436/108331
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
In a process for the production of an adsorbed citrated plasma deficient in Factors II, VII, IX and X, the step which comprises stirring citrated plasma with from 20 to 22% by weight of barium sulfate at ambient temperature and then removing the adsorbent from the adsorbed plasma.
Claim 2
Dependent Claim
48 words
In a process for the production of an adsorbed citrated plasma deficient in Factors II, VII, IX and X, the step which comprises stirring citrated plasma with from 20 to 22% by weight of barium sulfate at ambient temperature and then removing the adsorbent from the adsorbed plasma.
References Cited (Backward Citations)
US3179567A
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US3293134A
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US3395210A
Cited
US3486981A
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US3634581A
Cited
US3799885A
Cited
US3853710A
Cited
US3880714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |