Phillip Johnson
4Patents
4h-index
6Co-inventors
47Inventor score
Filing activity: Feb 3, 1975 → Nov 2, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4029415A | Laser land-surveying apparatus with digital display | Physics | 72 | Expired |
| US4162708A | Tool carrying vehicle with laser control apparatus | Emerging Cross-Sectional Technologies | 67 | Expired |
| US5576664A | Discrete time digital phase locked loop | Electricity | 24 | Expired |
| US3999075A | Control system for an integral spring-loaded parking and service brake | Performing Operations; Transporting | 14 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.