Patent US3152306A successfully refreshed from Google Patents.
US4582684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cuvette for the photo determination of chemical components in fluids
Assignee: Roche Diagnostics GmbH
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Filing: 1983-09-12
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Granted: 1986-04-15
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Expires: 2003-09-12
Abstract
Abstract A cuvette for the determination of a chemical component of a fluid by photo evaluation has two planar-shaped parts parallel to one another at least one of which is transparent in the spectral range used for the evaluation. A planar distance piece of a filamentary reticulation for receiving the fluid therein spaces the planar-shaped parts apart to set the length of the light path through the cuvette for the photo evaluation.
Inventors
- 👤 Peter Vogel
- 👤 Walter Rittersdorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:35
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/52; G01N33/525; G01N21/00; G01N21/01; G01N21/03; G01N31/00; G01N31/22
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
107 words
A cuvette for the determination of a chemical component of a fluid by photometric evaluation through the fluid, comprising: two, non-adsorbent, planar-shaped parts at least one of which is transparent in the spectral range used for the evaluation, the planar-shaped parts being joined together at less than all their perimeters; and a similarly-transparent, substantially-planar distance piece comprising a filamentary reticulation between the two planar-shaped parts for receiving the fluid and spacing the planar-shaped parts in parallel to one another by the thickness of the distance piece across a sufficient number of filaments to thereby determine a definite path length of light through the cuvette for the evaluation.
Claim 2
Dependent Claim
107 words
A cuvette for the determination of a chemical component of a fluid by photometric evaluation through the fluid, comprising: two, non-adsorbent, planar-shaped parts at least one of which is transparent in the spectral range used for the evaluation, the planar-shaped parts being joined together at less than all their perimeters; and a similarly-transparent, substantially-planar distance piece comprising a filamentary reticulation between the two planar-shaped parts for receiving the fluid and spacing the planar-shaped parts in parallel to one another by the thickness of the distance piece across a sufficient number of filaments to thereby determine a definite path length of light through the cuvette for the evaluation.
Claim 3
Dependent Claim
37 words
The cuvette of claim 1, wherein the distance piece is one of a monofilar and multifilar fabric of from about 30μ to about 500μ thick of synthetic resin filaments of from about 10μ to about 200μ thick.
Claim 4
Dependent Claim
36 words
The cuvette of claim 1, and additionally comprising a reagent for reaction with the fluid for the evaluation on a surface of at least one of the two planar-shaped parts facing a surface of the other.
Claim 5
Dependent Claim
36 words
The cuvette of claim 2, and additionally comprising a reagent for reaction with the fluid for the evaluation on a surface of at least one of the two planar-shaped parts facing a surface of the other.
Claim 6
Dependent Claim
19 words
The cuvette of claim 1, and additionally comprising an absorbent fluid-reception member in fluid communication with the distance piece.
Claim 7
Dependent Claim
19 words
The cuvette of claim 2, and additionally comprising an absorbent fluid-reception member in fluid communication with the distance piece.
Claim 8
Dependent Claim
19 words
The cuvette of claim 3, and additionally comprising an absorbent fluid-reception member in fluid communication with the distance piece.
Claim 9
Dependent Claim
19 words
The cuvette of claim 4, and additionally comprising an absorbent fluid-reception member in fluid communication with the distance piece.
Claim 10
Dependent Claim
28 words
The cuvette of claim 5, wherein the absorbent fluid-reception member comprises means operative on the fluid for at least one of reaction therewith and separation of components thereof.
Claim 11
Dependent Claim
28 words
The cuvette of claim 6, wherein the absorbent fluid-reception member comprises means operative on the fluid for at least one of reaction therewith and separation of components thereof.
Claim 12
Dependent Claim
28 words
The cuvette of claim 7, wherein the absorbent fluid-reception member comprises means operative on the fluid for at least one of reaction therewith and separation of components thereof.
Claim 13
Dependent Claim
28 words
The cuvette of claim 8, wherein the absorbent fluid-reception member comprises means operative on the fluid for at least one of reaction therewith and separation of components thereof.
Claim 14
Dependent Claim
31 words
The cuvette of claim 5 wherein the fluid-reception member is at least partly uncovered by at least one of the planar-shaped parts, whereby to provide access thereto for receiving the fluid.
Claim 15
Dependent Claim
31 words
The cuvette of claim 6 wherein the fluid-reception member is at least partly uncovered by at least one of the planar-shaped parts, whereby to provide access thereto for receiving the fluid.
Claim 16
Dependent Claim
31 words
The cuvette of claim 7 wherein the fluid-reception member is at least partly uncovered by at least one of the planar-shaped parts, whereby to provide access thereto for receiving the fluid.
Claim 17
Dependent Claim
31 words
The cuvette of claim 8 wherein the fluid-reception member is at least partly uncovered by at least one of the planar-shaped parts, whereby to provide access thereto for receiving the fluid.
Claim 18
Dependent Claim
22 words
The cuvette of claim 1, wherein one of the planar-shaped parts extends beyond the other for providing a handle to the cuvette.
Claim 19
Dependent Claim
22 words
The cuvette of claim 2, wherein one of the planar-shaped parts extends beyond the other for providing a handle to the cuvette.
Claim 20
Dependent Claim
22 words
The cuvette of claim 5, wherein one of the planar-shaped parts extends beyond the other for providing a handle to the cuvette.
Claim 21
Dependent Claim
22 words
The cuvette of claim 16, wherein one of the planar-shaped parts extends beyond the other for providing a handle to the cuvette.
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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) | 1989-04-14 | 1989-10-14 | 1990-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-14 | 1993-10-14 | 1994-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-14 | 1997-10-14 | 1998-04-15 | $7700.00 | Window Closed / Lapsed |