Larry Grigar
17Patents
13h-index
20Co-inventors
78Inventor score
Filing activity: Oct 24, 1984 → Feb 24, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4762067A | Downhole perforating method and apparatus using secondary explosive detonators | Mechanical Engineering; Lighting; Heating | 114 | Expired |
| US4574892A | Tubing conveyed perforating gun electrical detonator | Fixed Constructions | 101 | Expired |
| US6719061B2 | Apparatus and method for inserting and retrieving a tool string through well surface equipment | Fixed Constructions | 59 | Expired |
| US8151882B2 | Technique and apparatus to deploy a perforating gun and sand screen in a well | Fixed Constructions | 48 | Expired |
| US4629001A | Tubing pressure operated initiator for perforating in a well borehole | Fixed Constructions | 47 | Expired |
| US5040619A | Wireline supported perforating gun enabling oriented perforations | Fixed Constructions | 44 | Expired |
| US5211714A | Wireline supported perforating gun enabling oriented perforations | Fixed Constructions | 43 | Expired |
| US4759291A | Through bulkhead explosive initiator for oil well usage | Mechanical Engineering; Lighting; Heating | 36 | Expired |
| US7278484B2 | Techniques and systems associated with perforation and the installation of downhole tools | Fixed Constructions | 24 | Active |
| US8118098B2 | Flow control system and method for use in a wellbore | Fixed Constructions | 24 | Active |
| US4678044A | Tubing pressure operated initiator for perforating in a well borehole | Fixed Constructions | 21 | Expired |
| US8186425B2 | Sympathetic ignition closed packed propellant gas generator | Mechanical Engineering; Lighting; Heating | 21 | Active |
| US7152676B2 | Techniques and systems associated with perforation and the installation of downhole tools | Fixed Constructions | 17 | Expired |
| US4664184A | Balanced isolation tool enabling clean fluid in tubing perforated operations | Fixed Constructions | 12 | Expired |
| US7353871B2 | Downhole automatic tool release and method of use | Fixed Constructions | 11 | Active |
| US7487833B2 | Safety apparatus for perforating system | Mechanical Engineering; Lighting; Heating | 10 | Active |
| US7493958B2 | Technique and apparatus for multiple zone perforating | Fixed Constructions | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.