Patents
US 10571457 B2: Methods for the detection of oxidative adulterants in urine sample
- Granted
- 2020-02-25
- Filed
- 2018-09-24 application 16139802
- Type
- Utility · 16 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The problem of confirming the presence of an adulterant in a urine sample is solved by the use of a reagent capable of reacting with uric acid and non-urate markers in a urine sample. In one embodiment, a phosphotungtate reagent is used to react with the urine sample to create a blue coloration in the presence of uric acid or uric acid equivalents. A reduction or elimination of the blue coloration, resulting in a reduction in the light absorbance, of the urine sample can be used as an indicator of the historical presence of an adulterant. An Oxidant History test can also be generated using the phosphostungtate reagent, wherein the light absorbance resulting from the blue coloration is measured over time, with a measured reduction in the absorbance being an indication that an adulterant is or has been present in the urine sample and is oxidizing the uric acid and non-urate markers over time.
Source: PVGPATDIS, file of 2026-04-10 (ipg200225.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| VISION DIAGNOSTICS, INC. 6 patents | US company or organization | Branford, FL | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Jerry W. Denney | Branford, FL | 6 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01N | Investigating or analysing materials by determining their chemical or physical properties | G01N33/493 | PVGPATDIS, file of 2026-04-10 |
| Y10T | Technical subjects covered by former us classification | Y10T436/148888 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2018-09-25 | Assignment Assignment of assignor's interest | DENNEY, JERRY W. signed 2017-03-13 | VISION DIAGNOSTICS, INC. BRANFORD, FL | 46957/686 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.