Joseph M. Johnson
2Patents
0Active
2Granted
28Portfolio score
Filing activity: Feb 20, 2002 → Aug 20, 2003
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6773172B1 | Quick-release clamp for photographic equipment | Mechanical Engineering; Lighting; Heating | 135 | Expired |
| US6555175B2 | Process for the surface modification of a polymeric substrate | Emerging Cross-Sectional Technologies | 9 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.