US4380585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of benzidine-type indicators with various enhancers
Assignee: Bayer Corp
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Filing: 1981-07-23
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Granted: 1983-04-19
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Expires: 2001-07-23
Abstract
Abstract An improved composition, device and method, whereby enhanced sensitivity is achieved in detecting test sample constituents such as glucose and blood. The improvement resides in the use of a broad range of compounds as enhancers for benzidine-type indicators. The enhancer tends to stabilize the blue colorform of such indicators.
Inventors
- 👤 Thomas A. Magers
- 👤 David L. Tabb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:52
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/54; C12Q1/26; C12Q1/28; C12Q2326/00; C12Q2326/10; C12Q2326/12; C12Q2326/14; Y; Y10; Y10S; Y10S436/00; Y10S436/904; Y10T; Y10T436/00; Y10T436/14; Y10T436/142222; Y10T436/143333; Y10T436/144444
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
37 words
In a composition for detecting the presence of a constituent in a test sample, the composition comprising a benzidine-type indicator, the improvement wherein said composition additionally comprises, as an enhancer compound, a normal, branched or cyclic hexanol.
Claim 2
Dependent Claim
37 words
In a composition for detecting the presence of a constituent in a test sample, the composition comprising a benzidine-type indicator, the improvement wherein said composition additionally comprises, as an enhancer compound, a normal, branched or cyclic hexanol.
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein said enhancer compound is n-hexanol.
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) | 1986-04-18 | 1986-10-18 | 1987-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-18 | 1990-10-18 | 1991-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-18 | 1994-10-18 | 1995-04-19 | $7700.00 | Window Closed / Lapsed |