Philip Extance
10Patents
8h-index
8Co-inventors
54Inventor score
Filing activity: Jun 28, 1984 → Mar 14, 1988
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4656750A | Heading sensor | Physics | 42 | Expired |
| US4919099A | Combustion monitoring | Mechanical Engineering; Lighting; Heating | 41 | Expired |
| US4587509A | Hall effect device with overlapping flux concentrators | Physics | 37 | Expired |
| US4774494A | Position encoder employing three or more colors | Electricity | 23 | Expired |
| US4692703A | Magnetic field sensor having a Hall effect device with overlapping flux concentrators | Electricity | 22 | Expired |
| US4665363A | Optical fibre magnetic gradient detector | Physics | 11 | Expired |
| US4696543A | Optical fiber cable having a low permeability to hydrogen | Physics | 9 | Expired |
| US4697146A | Spherical shell fibre optic magnetic field sensors and magnetometers and magnetic gradient detectors incorporating them | Physics | 9 | Expired |
| US4668085A | Photo-elastic sensor | Physics | 8 | Expired |
| US4712065A | Magnetic field sensors, in particular optical fiber magnetometers | Physics | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.