John Wan
22Patents
8h-index
12Co-inventors
72Inventor score
Filing activity: Jul 26, 1977 → Jul 27, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD776290S1 | Fecal occult blood detector | General | 70 | Active |
| US4112321A | Brush holder and brush assembly for a dynamoelectric machine | Electricity | 28 | Expired |
| USD782058S1 | Fecal occult blood detector | General | 15 | Active |
| USD797303S1 | Body fluid testing cup | General | 15 | Active |
| US7927562B2 | Collection and assay device for biological fluid | Emerging Cross-Sectional Technologies | 13 | Active |
| USD776291S1 | Fecal specimen collector | General | 13 | Active |
| USD825773S1 | Fecal occult blood detector | General | 9 | Active |
| USD620590S1 | Liquid sampling and testing cup | General | 8 | Expired |
| USD776292S1 | Feces sampling and detecting device | General | 5 | Active |
| US8556826B2 | Fecal specimen collector | Human Necessities | 3 | Active |
| USD645769S1 | Liquid sampling and detecting device | General | 2 | Expired |
| US8053203B2 | Methods and device for the detection of occult blood | Physics | 2 | Active |
| US9535054B2 | Body fluid testing apparatus | Physics | 1 | Active |
| US9149258B2 | Collection device with double outputs and method of using the same | Emerging Cross-Sectional Technologies | 1 | Active |
| US8349573B2 | Methods and device for the detection of occult blood | Physics | 1 | Active |
| US10001494B2 | Automatic fecal occult blood detector | Physics | 1 | Active |
| US10684300B2 | Rotating disc type fecal occult blood detection analyzer | Physics | 0 | Active |
| US10390803B2 | Feces sampling and detecting device and method for detecting feces based on the device | Physics | 0 | Active |
| US10132741B2 | Integrated device for sampling and detecting fecal samples | Performing Operations; Transporting | 0 | Active |
| US10384205B2 | Integrated sampling and detection device with misassembly prevention structure | Performing Operations; Transporting | 0 | Active |
| US10359443B2 | Fully automatic fecal occoult blood detecting analyzer | Physics | 0 | Active |
| US9404910B2 | Body fluid testing apparatus with testing and storing functions | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.