Michael D. Langenfeld
13Patents
3h-index
4Co-inventors
49Inventor score
Filing activity: Nov 29, 2011 → May 19, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US10711520B2 | Dual rod directional drilling system | Fixed Constructions | 5 | Active |
| US10851588B2 | Dual rod directional drilling system | Fixed Constructions | 4 | Active |
| US8991490B2 | Tapered thread configuration with improved durability | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US11149501B2 | Rod coupler and coupled rod assembly | Fixed Constructions | 2 | Active |
| US11105156B2 | Pullback system for drilling tool | Fixed Constructions | 2 | Active |
| US9605491B2 | Tapered thread configuration with improved durability | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US11808151B2 | Dual rod directional drilling system | Fixed Constructions | 1 | Active |
| US11697967B2 | Pullback system for drilling tool | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US10961779B2 | Dual rod directional drilling system | Fixed Constructions | 1 | Active |
| US9016366B2 | Tapered thread configuration with improved durability | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US12352165B2 | Pullback system for drilling tool | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10227832B2 | Tapered thread configuration with improved durability | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11913287B2 | Mounting arrangement for pullback adaptor | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.