James Evan Johnson
5Patents
1Active
5Granted
32Portfolio score
Filing activity: Jul 8, 1983 → Sep 17, 2012
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4785606A | Mechanized roof laying system | Fixed Constructions | 25 | Expired |
| US4504550A | Releasably mutually-adherent materials | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5688027A | Control valve lock for a vehicle air brake system | Performing Operations; Transporting | 10 | Expired |
| US6210261A | Tool protective shield | Performing Operations; Transporting | 4 | Expired |
| US9185536B1 | Apparatus and method for obtaining inconspicuous user input on a mobile device | Electricity | 3 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.