US3947378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorbed plasma
Assignee: Warner Lambert Co LLC
•
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 05:49
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
Cited
US3293134A
Cited
US3395210A
Cited
US3486981A
Cited
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 |