John E. Mason
6Patents
4h-index
7Co-inventors
50Inventor score
Filing activity: Jul 16, 1987 → May 19, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6420971B1 | Electronic seal, methods and security system | Physics | 194 | Expired |
| US4768617A | Adjustable stairway having retractable wheel carriage | Performing Operations; Transporting | 31 | Expired |
| US5357890A | Boat keel/hull protector | Performing Operations; Transporting | 19 | Expired |
| US9459067B1 | Crossbow fletching groove and method therefore | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US5433795A | Fabrication of permanent magnets without loss in magnetic properties | Electricity | 4 | Expired |
| US8555889B2 | Post-surgical protective pillow | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.