Patents
US 11460409 B1: Methods and reagents useful for verification of the integrity of a urine sample and the detection of counterfeit urine
- Granted
- 2022-10-04
- Filed
- 2018-04-24 application 15961003
- Type
- Utility · 15 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The problem of detecting whether a urine sample is true human urine or a counterfeit urine product is solved by the use of reagent systems that detect two markers normally present in human urine. The markers acid phosphatase and alkaline phosphatase catalyze the substrates thymolphthalein monophosphate and p-nitrophenol phosphate, respectively. These substrates are formulated as spot tests on a dip stick or as reagents for use in automated chemical analyzers. The presence of the markers can be qualitatively detected by color-changes in the sample, formed by the pH-specific chromogens that result from catalysis of the substrates with the markers. The control reagent can further indicate whether a counterfeit urine product contains one or both of the chromogens.
Source: PVGPATDIS, file of 2026-04-10 (ipg221004.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 | G01N21/78 | PVGPATDIS, file of 2026-04-10 |
| C12Q | Measuring or testing processes involving enzymes, nucleic acids or microorganisms ; compositions or test papers therefor; processes of preparing such compositions; condition-responsive control in microbiological or enzymological processes | C12Q1/42 | PVGPATDIS, file of 2026-04-10 |
| C12Y | Enzymes | C12Y301/03001 | 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 |
|---|---|---|---|---|---|
| 2018-04-24 | Assignment Assignment of assignor's interest | DENNEY, JERRY W. signed 2018-04-13 | VISION DIAGNOSTICS, INC. BRANFORD, FL | 45622/243 | 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.