Daniel U. Johnston
9Patents
5h-index
8Co-inventors
56Inventor score
Filing activity: May 8, 1975 → Jun 23, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4393688A | Piezoelectric knock sensor | Physics | 14 | Expired |
| US6622589B1 | Manual control apparatus | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4620620A | Actuator for adjustable hydraulic damper | Emerging Cross-Sectional Technologies | 9 | Expired |
| US3982553A | Vacuum reducer valve assembly | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6580352B1 | Manual control apparatus and method | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4002085A | Accelerator control assembly | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4864915A | Vacuum operated actuator | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US10327422B2 | Dog leash clip | Performing Operations; Transporting | 1 | Active |
| US9889529B2 | System and method for preloading tension in a stud using an anti-seizure spacer for tapered thread connections | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.