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US5057431A
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Device for optical measuring of physical dimensions and material concentrations
Assignee: Max-Planck-Gesellschaft zur Förderung der Wissenschaften eV
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Filing: 1988-09-15
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Granted: 1991-10-15
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Expires: 2008-09-15
Abstract
Abstract An optode designed to prevent washing away of the indicator and reagent from a membrane is located within an optical device that measures substance concentrations. The reagent and indicator materials are covalently bound on the membrane. The membrane can be a polysaccharide, especially cellulose, an acid glycol ester, or it can contain silicon. The indicator and/or reagent can be covalently bound to the membrane by a bridge molecular, particularly a multifunctional aldehyde, glutaraldehyde or a silane.
Inventors
- 👤 Dietrich W. Lubbers
- 👤 Klaus P. Volkl
- 👤 Norbert Opitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:19
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/63; G01N21/64; G01N21/6428; G01N21/643; G01K; G01K1/00; G01K11/00; Y; Y10; Y10S; Y10S435/00; Y10S435/817; Y10T; Y10T436/00; Y10T436/25; Y10T436/25375; Y10T436/255
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
80 words
A device for optical measurement of a particle concentration comprising: means for introducing particles; a membrane; at least one indicator material defining an indicator space, said indicator material emitting light upon light-excitation; and a reagent which reacts with said particles to form an intermediate species, said intermediate species effecting said emitting of light from the indicator material, said reagent defining a reagent space; wherein said at least one indicator material and said reagent are both covalently bound to said membrane.
Claim 2
Independent Claim
80 words
A device for optical measurement of a particle concentration comprising: means for introducing particles; a membrane; at least one indicator material defining an indicator space, said indicator material emitting light upon light-excitation; and a reagent which reacts with said particles to form an intermediate species, said intermediate species effecting said emitting of light from the indicator material, said reagent defining a reagent space; wherein said at least one indicator material and said reagent are both covalently bound to said membrane.
Claim 3
Dependent Claim
77 words
Device in accordance with claim 1, wherein said reagent comprises a plurality of reagent molecules and said indicator material comprises a plurality of indicator molecules; and wherein the covalent binding of the indicator material and the reagent to the membrane occurs via bridge molecules, each of said reagent molecules being attached to said membrane by one of said bridge molecules and each of said indicator molecules being attached to said membrane by one of said bridge molecules.
Claim 4
Dependent Claim
12 words
Device in accordance with claim 2, wherein said bridge molecules are silanes.
Claim 5
Dependent Claim
13 words
Device in accordance with claim 2, wherein said bridge molecules are multifunctional aldehydes.
Claim 6
Dependent Claim
12 words
Device in accordance with claim 4, wherein said bridge molecules are glutaraldehydes.
Claim 7
Dependent Claim
12 words
Device in accordance with claim 1, wherein said membrane comprises a polymer.
Claim 8
Dependent Claim
13 words
Device in accordance with claim 6, wherein said polymer consists of a polysaccharide.
Claim 9
Dependent Claim
20 words
Device in accordance with claim 7, wherein said polysaccharide is selected from the group consisting of cellulose and cellulose derivatives.
Claim 10
Dependent Claim
14 words
Device in accordance with claim 6, wherein said polymer consists of acid glycol esters.
Claim 11
Dependent Claim
22 words
Device in accordance with claim 1, wherein said membrane contains a material selected from the group consisting of silicon and silicon derivatives.
Claim 12
Dependent Claim
13 words
Device in accordance with claim 10, wherein said membrane consists of silicone rubber.
Claim 13
Dependent Claim
17 words
Device in accordance with claim 1, wherein said indicator material and said reagent are enclosed in microoptodes.
Claim 14
Dependent Claim
15 words
Device in accordance with claim 12, wherein said microoptodes are covalently bound to said membrane.
Claim 15
Dependent Claim
11 words
Device in accordance with claim 1, wherein said membrane is blackened.
Claim 16
Dependent Claim
11 words
Device in accordance with claim 1, wherein said membrane is metallized.
Claim 17
Dependent Claim
18 words
Device in accordance with claim 1, wherein said reagent is an enzyme which produces oxygen from said particles.
Claim 18
Dependent Claim
13 words
Device in accordance with claim 1, wherein said indicator comprises pyrene butyric acid.
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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) | 1994-10-14 | 1995-04-15 | 1995-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-14 | 1999-04-15 | 1999-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-14 | 2003-04-15 | 2003-10-15 | $7700.00 | Window Closed / Lapsed |