David Ledden
26Patents
6h-index
34Co-inventors
69Inventor score
Filing activity: Apr 16, 1986 → Feb 12, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5356782A | Analytical test apparatus with on board negative and positive control | Emerging Cross-Sectional Technologies | 128 | Expired |
| US7499154B2 | Readhead for optical inspection apparatus | Physics | 14 | Expired |
| US4810635A | Specific binding assays employing label analog to reduce sample interferences | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5492813A | Muteins of .beta.-galactosidase fragments having increased activity | Emerging Cross-Sectional Technologies | 10 | Expired |
| US9416776B2 | Microfluidic distributing device | Performing Operations; Transporting | 10 | Active |
| US5464747A | Oxidation-resistant muteins of .beta.-galactosidase fragments | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6093546A | Process for preparing test elements | Physics | 4 | Expired |
| US7538336B2 | Automatic identification of reagent test strips using reflectance values | Physics | 2 | Expired |
| US8101429B2 | Native analyte as a reference in lateral flow assays | Emerging Cross-Sectional Technologies | 1 | Expired |
| US11369314B2 | Biofouling prevention of wearable sensors and methods of use and calibration related thereto | Human Necessities | 1 | Active |
| US10105701B2 | Microfluidic distributing device | Performing Operations; Transporting | 0 | Active |
| US11585808B2 | Devices, methods, and kits for multiplexing a fluid sample via fluid sample reuse | Physics | 0 | Active |
| US12311363B2 | HBA1c assay slide and method of making same | Physics | 0 | Active |
| US11460475B2 | Composition of a bilirubin stock and a method of preparation thereof | Emerging Cross-Sectional Technologies | 0 | Active |
| US11339419B2 | Scavenger protein(s) for improved preservation of analyte detection sensor(s) and method(s) of use thereof | Physics | 0 | Active |
| US11040350B2 | Liquid analytical reagent dispensing apparatus and analytical kits and methods of use related thereto | Performing Operations; Transporting | 0 | Active |
| US10472403B2 | Proteolytic digestion of cardiac troponin I | Physics | 0 | Active |
| US10371661B2 | Luminescent oxygen channeling immunoassays utilizing electrochemical discharge of singlet oxygen and methods of production and use thereof | Physics | 0 | Active |
| US10288628B2 | Spectroscopic methods for the detection of glycated hemoglobin | Emerging Cross-Sectional Technologies | 0 | Active |
| US12366571B2 | Luminescent oxygen channeling immunoassay utilizing three antibodies and methods of production and use thereof | Physics | 0 | Active |
| US10371643B2 | Luminescent oxygen channeling immunoassays | Physics | 0 | Active |
| US11480558B2 | Method and device comprising an optical fiber located inside a channel for determining the concentration of analyte in whole blood based on change of reflected light wavelength | Physics | 0 | Active |
| US10391484B2 | Sample delivery system | Physics | 0 | Active |
| US11460476B2 | Dye-based liquid reagent volume indicator for use in analyte detection assays | Physics | 0 | Active |
| US12399169B2 | Tangent flow hemolysis detection blood testing device | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.