Robert James Campbell
12Patents
6h-index
16Co-inventors
63Inventor score
Filing activity: Mar 4, 1994 → Jun 27, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5955881A | Linkage position sensor having a magnet with two ramped sections for providing variable magnetic field | Physics | 85 | Expired |
| US6018241A | Linkage of position sensor | Physics | 52 | Expired |
| US5757179A | Position sensor with improved magnetic circuit | Mechanical Engineering; Lighting; Heating | 50 | Expired |
| US5798639A | Rotary position sensor with improved bearing tolerance | Performing Operations; Transporting | 22 | Expired |
| US5982170A | Rotary position sensor with improved bearing tolerance | Performing Operations; Transporting | 19 | Expired |
| USD746227S1 | Battery charger | General | 17 | Active |
| US10772502B2 | Non-invasive intraocular pressure monitor | Human Necessities | 3 | Active |
| US11684258B2 | Non-invasive intraocular pressure monitor | Human Necessities | 1 | Active |
| US12245816B2 | Intraocular pressure monitoring contact lens | Physics | 0 | Active |
| US12245817B2 | Non-invasive intraocular pressure monitor | Human Necessities | 0 | Active |
| US12419549B2 | Sheath for a medical device | Human Necessities | 0 | Active |
| US11684297B2 | Sheath for a medical device | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.