US4780280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test carrier
Assignee: Roche Diagnostics GmbH
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Filing: 1986-06-27
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Granted: 1988-10-25
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Expires: 2006-06-27
Abstract
Abstract A test support for support-bound tests for the determination of components of fluids, especially of human and animal body fluids. The test support is composed of a plurality of layers, and the joining of the layers is accomplished at least partially by sewing.
Inventors
- 👤 Dieter Berger
- 👤 Elke Biegel
- 👤 Gunter Frey
- 👤 Hans-Rudiger Murawski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:42
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/52; G01N33/525
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
94 words
A clinical analysis test carrier for determining the concentration of a componenet of a body fluid of human beings and animals comprising a base layer of a stiff plastic film at last one reaction layer including reagent means for reacting with the component to form a color change characteristic of said component, and a connecting layer disposed between the base layer and the at least one reaction layer, the connecting layer being sewn to the reaction layer with stitches and the base layer being joined to the connecting layer by means other than stitches.
Claim 2
Dependent Claim
94 words
A clinical analysis test carrier for determining the concentration of a componenet of a body fluid of human beings and animals comprising a base layer of a stiff plastic film at last one reaction layer including reagent means for reacting with the component to form a color change characteristic of said component, and a connecting layer disposed between the base layer and the at least one reaction layer, the connecting layer being sewn to the reaction layer with stitches and the base layer being joined to the connecting layer by means other than stitches.
Claim 3
Dependent Claim
12 words
The test carrier according to claim 1, wherein stitches are monofil threads.
Claim 4
Dependent Claim
32 words
The test carrier according to claim 1, where said layers are joine by at least two seams formed from said stitches and wherein said seams are no more than 10 mm apart.
Claim 5
Dependent Claim
19 words
The test carrier according to claim 1, further comprising an additional hold-down layer disposed on one of said layers.
Claim 6
Dependent Claim
16 words
The test carrier according to claim 1, wherein the connecting layer, is a liquid transport layer.
Claim 7
Dependent Claim
22 words
The test carrier according to claim 1, further comprising a liquid transport layer disposed between the connecting layer and the reaction layer.
Claim 8
Dependent Claim
18 words
The test carrier of claim 1 wherein said base layer and said connecting layer are joined by gluing.
Claim 9
Dependent Claim
18 words
The test carrier according to claim 1 in herein said stitches are spaced 0.2 to 3 mm apart.
Claim 10
Dependent Claim
18 words
The test carrier according to claim 8, wherein said stitches are sapced from 0.5 to 2 mm apart.
Claim 11
Dependent Claim
26 words
The test carrier according to claim 1, wherein said stitches are at a distance from a margin of the joined layers of 0.5 to 3 mm.
Claim 12
Dependent Claim
23 words
The test carrier according to claim 10, wherein said stitches are at a distance from said margin of from 1 to 2 mm.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-25 | 1992-04-25 | 1992-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-25 | 1996-04-25 | 1996-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-25 | 2000-04-25 | 2000-10-25 | $7700.00 | Window Closed / Lapsed |