John Robert Herold
4Patents
4h-index
8Co-inventors
36Inventor score
Filing activity: Aug 26, 1994 → Nov 17, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5782297A | Retrieval tool for back pressure valve and tree test plug | Fixed Constructions | 19 | Expired |
| US5474124A | Wellhead retrieval tool assembly | Fixed Constructions | 10 | Expired |
| US5730218A | Tool protection guide with energy absorbing bumper | Fixed Constructions | 8 | Expired |
| US5896925A | Tool protection guide | Fixed Constructions | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.