US4743559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the determination of redox reactions using iodate to eliminate ascorbic acid interference
Assignee: Roche Diagnostics GmbH
•
Filing: 1986-12-15
•
Granted: 1988-05-10
•
Expires: 2006-12-15
Abstract
Abstract The present invention provides a process for the detection of redox reactions by introducing a redox reagent system into a test system, wherein a soluble iodate is additionally added to the test system in an amount which is in excess of the highest amount of disturbing reducing agents present in the test system. The present invention also provides a diagnostic agent for the detection of redox reactions containing a redox reagent system, wherein the test system used additionally contains an iodate which is soluble therein in an amount which is in excess of the highest amount of disturbing reducing agents present in the test system.
Inventors
- 👤 Laszlo Koever
- 👤 Walter Rittersdorf
- 👤 Wolfgang Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:22
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/26; C12Q1/28; C12Q1/54; Y; Y10; Y10S; Y10S436/00; Y10S436/825; Y10S436/904; Y10T; Y10T436/00; Y10T436/14; Y10T436/142222; Y10T436/143333; Y10T436/144444; Y10T436/20; Y10T436/206664; Y10T436/25; Y10T436/25125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
Method for detecting an analyte with the aid of a redox reaction in a test system in the presence of ascorbic acid as an interfering reducing agent comprising adding to a test system which contains a redox agent system which reacts to form a visually or photometrically detectable or assessable color an amount of soluble iodate which is in excess of the amount necessary to remove said ascorbic acid, reacting said ascorbic acid with said iodate at a pH of from 5 to 9, and detecting said redox reaction in the presence of excess iodate ions.
Claim 2
Dependent Claim
96 words
Method for detecting an analyte with the aid of a redox reaction in a test system in the presence of ascorbic acid as an interfering reducing agent comprising adding to a test system which contains a redox agent system which reacts to form a visually or photometrically detectable or assessable color an amount of soluble iodate which is in excess of the amount necessary to remove said ascorbic acid, reacting said ascorbic acid with said iodate at a pH of from 5 to 9, and detecting said redox reaction in the presence of excess iodate ions.
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) | 1991-05-10 | 1991-11-09 | 1992-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-10 | 1995-11-09 | 1996-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-10 | 1999-11-09 | 2000-05-10 | $7700.00 | Window Closed / Lapsed |