US4788152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining coagulation parameter
Assignee: Roche Diagnostics GmbH
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Filing: 1987-03-19
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Granted: 1988-11-29
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Expires: 2007-03-19
Abstract
Abstract The present invention provides a test carrier for the determination of coagulation parameters, wherein it includes a test layer which contains silanized glass fibres which are coated with polyvinyl alcohol or polyvinyl alcohol/vinyl acetate.
Inventors
- 👤 Jurgen Doeding
- 👤 Hans Wielinger
- 👤 Rolf Lerch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:34
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/52; D; D21; D21H; D21H13/00; D21H13/36; D21H13/38; D21H13/40; D21H5/00; D21H5/12; G01N33/86; Y; Y10; Y10T; Y10T436/00; Y10T436/25; Y10T436/25125; Y10T436/25375; Y10T436/255
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
38 words
Test carrier for determining a coagulation parameter of blood comprising a reagent for determining said parameter and a test layer, said test layer containing silanized glass fibers and a coating layer of polyvinyl alcohol or polyvinyl alcohol/vinyl acetate.
Claim 2
Dependent Claim
38 words
Test carrier for determining a coagulation parameter of blood comprising a reagent for determining said parameter and a test layer, said test layer containing silanized glass fibers and a coating layer of polyvinyl alcohol or polyvinyl alcohol/vinyl acetate.
Claim 3
Dependent Claim
16 words
Test carrier of claim 1, wherein said test layer contains from 0.5 to 20% polyvinyl alcohol.
Claim 4
Dependent Claim
16 words
Test carrier of claim 1, wherein said test layer contains from 1 to 5% polyvinyl alcohol.
Claim 5
Dependent Claim
19 words
Test carrier of claim 1, wherein said glass fibers have an average diameter of from 0.2 to 5 μm.
Claim 6
Dependent Claim
20 words
Test carrier of claim 1, wherein said glass fibers have a density of from 0.1 to 0.5 g/cm 3 .
Claim 7
Dependent Claim
34 words
Test carrier of claim 1, wherein said glass fibers have an average diameter of from 0.2 to 0.5 μm and said test layer has a density of from 0.1 to 0.5 g/cm 3 .
Claim 8
Dependent Claim
12 words
Test carrier of claim 1, wherein said test layer is a fleece.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-29 | 1992-05-30 | 1992-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-29 | 1996-05-30 | 1996-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-29 | 2000-05-30 | 2000-11-29 | $7700.00 | Window Closed / Lapsed |