US5262127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state chemical micro-reservoirs
Assignee: University of Michigan (System)
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Filing: 1992-02-12
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Granted: 1993-11-16
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Expires: 2012-02-12
Abstract
Abstract The present invention relates to a method for storing chemical reagents in micro-reservoirs, a chemical sensor system and a chemical micro-reactor.
Inventors
- 👤 Kensall D. Wise
- 👤 Johannes W. Schwank
- 👤 John L. Gland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:16
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0093; G; G01; G01N; G01N35/00; G01N35/10; G01N35/1002; G01N2035/00178; G01N2035/00237; G01N27/00; G01N27/02; G01N27/04; G01N27/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
106 words
A chemical microsensing system, comprising: a chemical microsensor; and a chemical micro-reservoir comprising: i) a substrate comprising a) two opposed major surfaces including a dielectric window region; b) heater means situated on said dielectric window region on one side of said opposed surfaces; and c) a conductivity cell electrode means situated on said dielectric window on the opposite surface from said heater means; ii) a solid film deposited on said surface containing said conductivity cell electrode means; and iii) a chemical reagent absorbed onto said solid film; wherein said chemical reagent is one that is liberated from said chemical micro-reservoir and transported to said chemical microsensor.
Claim 2
Dependent Claim
106 words
A chemical microsensing system, comprising: a chemical microsensor; and a chemical micro-reservoir comprising: i) a substrate comprising a) two opposed major surfaces including a dielectric window region; b) heater means situated on said dielectric window region on one side of said opposed surfaces; and c) a conductivity cell electrode means situated on said dielectric window on the opposite surface from said heater means; ii) a solid film deposited on said surface containing said conductivity cell electrode means; and iii) a chemical reagent absorbed onto said solid film; wherein said chemical reagent is one that is liberated from said chemical micro-reservoir and transported to said chemical microsensor.
Claim 3
Dependent Claim
87 words
A chemical micro-reactor comprising two micro-reservoirs, wherein each micro-reservoir comprises: a) two opposed major surfaces including a dielectric window region; b) heater means situated on said dielectric window region on one side of said opposed surfaces; c) an active film situated on said major surface opposed to said heater means; and d) a chemical reagent absorbed onto said active film; wherein said chemical reagent is different for each micro-reservoir; and wherein liberation of the two different chemical reagents results in a chemical reaction between said chemical reagents.
Claim 4
Dependent Claim
87 words
A chemical micro-reactor comprising two micro-reservoirs, wherein each micro-reservoir comprises: a) two opposed major surfaces including a dielectric window region; b) heater means situated on said dielectric window region on one side of said opposed surfaces; c) an active film situated on said major surface opposed to said heater means; and d) a chemical reagent absorbed onto said active film; wherein said chemical reagent is different for each micro-reservoir; and wherein liberation of the two different chemical reagents results in a chemical reaction between said chemical reagents.
Claim 5
Dependent Claim
15 words
The chemical microsensing system of claim 1, further comprising at least a second chemical micro-reservoir.
Claim 6
Dependent Claim
11 words
The chemical micro-reactor of claim 2, comprising at least two micro-reservoirs.
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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) | 1996-11-15 | 1997-05-17 | 1997-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-15 | 2001-05-17 | 2001-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-15 | 2005-05-17 | 2005-11-16 | $7700.00 | Window Closed / Lapsed |