Cathedral Energy Services Ltd.
7Patents
7Active
7Granted
44Portfolio score
Filing activity: Apr 30, 2012 → Jun 24, 2019
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9963938B2 | Directional drilling motor | Fixed Constructions | 20 | Active |
| US8915788B2 | Universal joint for a downhole drilling motor | Emerging Cross-Sectional Technologies | 15 | Active |
| US10683710B2 | Device for isolating a tool from axial vibration while maintaining conductor connectivity | Fixed Constructions | 1 | Active |
| US10989302B2 | Method and device for mounting shaft seals permitting eccentric motion | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10378650B2 | Method and device for mounting shaft seals permitting eccentric motion | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US9377056B2 | Bearing stack for a down-hole drilling motor | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US9303686B2 | Bearing assembly | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.