Daniel C. Markel
13Patents
10h-index
23Co-inventors
72Inventor score
Filing activity: Aug 7, 1990 → Dec 19, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5816343A | Phased perforating guns | Fixed Constructions | 95 | Expired |
| US6520258B1 | Encapsulant providing structural support for explosives | Mechanical Engineering; Lighting; Heating | 53 | Expired |
| US7347261B2 | Magnetic locator systems and methods of use at a well site | Fixed Constructions | 51 | Expired |
| US6554081B1 | Components and methods for use with explosives | Mechanical Engineering; Lighting; Heating | 43 | Expired |
| US5123356A | Transfer apparatus adapted for transferring an explosive train through an externally pressurized secondary explosive bulkhead | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US6591911B1 | Multi-directional gun carrier method and apparatus | Fixed Constructions | 30 | Expired |
| US6386109B1 | Shock barriers for explosives | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US6453817B1 | Shaped charge capsule | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US5095999A | Through tubing perforating gun including a plurality of phased capsule charges mounted on a retrievable base strip via a plurality of shatterable support rings | Fixed Constructions | 16 | Expired |
| US6702039B2 | Perforating gun carriers and their methods of manufacture | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7197985B2 | High-pressure explosive retention device | Fixed Constructions | 6 | Expired |
| US7413015B2 | Perforating gun | Fixed Constructions | 2 | Expired |
| US10648263B2 | Downhole plug assembly | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.