US4272484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filling for optodes
Assignee: Max-Planck-Gesellschaft zur Förderung der Wissenschaften eV
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Filing: 1979-09-05
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Granted: 1981-06-09
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Expires: 1999-09-05
Abstract
Abstract In order to improve the selectivity of an indicator chamber or optode conting of an indicator and a membrane impermeable to the indicator and surrounding it, for use in the measurement of concentration of component particles by means of an optical light measurement system including a light source, a light receiver and a readout device, a substance which reacts with the particle to be measured is provided within the indicator chamber, and the reaction product then modifies the optical properties of the indicator.
Inventors
- 👤 Dietrich W. Lubbers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:14
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; G01N21/00; G01N21/75; G01N21/77; G01N33/00; G01N33/48; G01N33/50; G01N33/52; G01N33/521; G01N33/53; G01N33/543; G01N33/54366; G01N33/54373
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
94 words
In an indicator chamber (optode) comprising an indicator and a membrane surrounding said indicator and impermeable to it, for measurement of concentration of particles by means of a light measurement system including a light source, a light receiver and readout means, the improvement comprising providing in a filling within said indicator chamber a substance which reacts with said particle to be measured and which generates through said reaction a reaction product which modifies the optical properties of said indicator, thereby allowing the preparation of highly selective indicator chambers with a broad range of applicability.
Claim 2
Dependent Claim
94 words
In an indicator chamber (optode) comprising an indicator and a membrane surrounding said indicator and impermeable to it, for measurement of concentration of particles by means of a light measurement system including a light source, a light receiver and readout means, the improvement comprising providing in a filling within said indicator chamber a substance which reacts with said particle to be measured and which generates through said reaction a reaction product which modifies the optical properties of said indicator, thereby allowing the preparation of highly selective indicator chambers with a broad range of applicability.
Claim 3
Dependent Claim
13 words
An optode as defined in claim 1, wherein said substance is an enzyme.
Claim 4
Dependent Claim
13 words
An optode as defined in claim 2, wherein said enzyme is glucose oxidase.
Claim 5
Dependent Claim
13 words
An optode as defined in claim 1, wherein said substance is an antibody.
Claim 6
Dependent Claim
16 words
An optode as defined in claim 1, wherein said membrane consists of more than one layer.
Claim 7
Dependent Claim
24 words
An optode as defined in claim 1, wherein said membrane is provided with a carrier for selective transport of said particle to be measured.
Claim 8
Dependent Claim
16 words
An optode as defined in claim 1, wherein said substance is fixed into a carrier matrix.
Claim 9
Dependent Claim
18 words
An optode as defined in claim 1, wherein said chamber is in the form of a flat surface.
Claim 10
Dependent Claim
17 words
An optode as defined in claim 1, wherein said chamber is in the form of a capsule.
Claim 11
Dependent Claim
20 words
A optode as defined in claim 1, wherein a first chamber is provided within a second chamber which surrounds it.
Claim 12
Dependent Claim
15 words
An optode as defined in claim 10; further comprising additional chambers surrounding said first chamber.
Claim 13
Dependent Claim
22 words
An optode as defined in claim 1, wherein a substance which binds said particle to be measured is provided within said chamber.
Claim 14
Dependent Claim
14 words
An optode as defined in claim 1, wherein a reference indicator is additionally provided.
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) | 1984-06-08 | 1984-12-08 | 1985-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-08 | 1988-12-08 | 1989-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-08 | 1992-12-08 | 1993-06-09 | $7700.00 | Window Closed / Lapsed |