Duane Bloom
36Patents
25h-index
13Co-inventors
78Inventor score
Filing activity: Dec 3, 1999 → Dec 21, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6347674B1 | Electrically sequenced tractor | Fixed Constructions | 106 | Expired |
| US6467557B1 | Long reach rotary drilling assembly | Fixed Constructions | 81 | Expired |
| US6241031A | Electro-hydraulically controlled tractor | Fixed Constructions | 71 | Expired |
| US6464003B2 | Gripper assembly for downhole tractors | Fixed Constructions | 60 | Expired |
| US6640894B2 | Gripper assembly for downhole tools | Fixed Constructions | 55 | Expired |
| US6679341B2 | Tractor with improved valve system | Fixed Constructions | 55 | Expired |
| US6478097B2 | Electrically sequenced tractor | Fixed Constructions | 51 | Expired |
| US6715559B2 | Gripper assembly for downhole tractors | Fixed Constructions | 49 | Expired |
| US7048047B2 | Gripper assembly for downhole tools | Fixed Constructions | 46 | Expired |
| US7392859B2 | Roller link toggle gripper and downhole tractor | Fixed Constructions | 46 | Expired |
| US7080700B2 | Tractor with improved valve system | Fixed Constructions | 44 | Expired |
| US7080701B2 | Electrically sequenced tractor | Fixed Constructions | 43 | Expired |
| US6427786B2 | Electro-hydraulically controlled tractor | Fixed Constructions | 43 | Expired |
| US7174974B2 | Electrically sequenced tractor | Fixed Constructions | 40 | Expired |
| US6938708B2 | Electrically sequenced tractor | Fixed Constructions | 39 | Expired |
| US7121364B2 | Tractor with improved valve system | Fixed Constructions | 39 | Expired |
| US6745854B2 | Electrically sequenced tractor | Fixed Constructions | 37 | Expired |
| US7954563B2 | Roller link toggle gripper and downhole tractor | Fixed Constructions | 33 | Active |
| US7607497B2 | Roller link toggle gripper and downhole tractor | Fixed Constructions | 32 | Active |
| US7493967B2 | Tractor with improved valve system | Fixed Constructions | 29 | Active |
| US7353886B2 | Tractor with improved valve system | Fixed Constructions | 29 | Active |
| US7185716B2 | Electrically sequenced tractor | Fixed Constructions | 28 | Expired |
| US7275593B2 | Gripper assembly for downhole tools | Fixed Constructions | 28 | Expired |
| US7188681B2 | Tractor with improved valve system | Fixed Constructions | 28 | Expired |
| US7191829B2 | Gripper assembly for downhole tools | Fixed Constructions | 27 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.