Everett A. Johnson
9Patents
8h-index
1Co-inventors
55Inventor score
Filing activity: Jun 18, 1974 → Aug 6, 1984
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4213038A | Access security system | Physics | 59 | Expired |
| US4150781A | Access authentication system | Physics | 55 | Expired |
| US4599509A | Access security control | Physics | 37 | Expired |
| US3999042A | Access control system | Physics | 19 | Expired |
| US4395628A | Access security control | Physics | 15 | Expired |
| US4464566A | Access security control | Physics | 13 | Expired |
| US4303852A | Access security control | Physics | 13 | Expired |
| US4018503A | Holographic systems having reference beam coded holograms | Emerging Cross-Sectional Technologies | 8 | Expired |
| US3947661A | Access authenticating system | Physics | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.