Ed Matthews
1Patents
0Active
1Granted
22Portfolio score
Filing activity: Dec 31, 2002 → Dec 31, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6854515B2 | Wellhead hydraulic drive unit | Mechanical Engineering; Lighting; Heating | 20 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.