DBT GMBH
63Patents
16Active
63Granted
41Portfolio score
Filing activity: Jun 4, 1998 → May 17, 2021 · 15 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7117989B2 | Device for detecting the tension of scraper chains | Performing Operations; Transporting | 35 | Expired |
| US8038558B2 | Chain drive or return arrangement and chain assembly and sprocket employed therein | Mechanical Engineering; Lighting; Heating | 21 | Active |
| US7490911B2 | Drive device for rotating and oscillating a tool, and a compatible tool for mining | Fixed Constructions | 21 | Active |
| US7731298B2 | Shearer-loader drive subassembly and guide shoe for it | Fixed Constructions | 16 | Active |
| US7032743B2 | Conveyor pan | Performing Operations; Transporting | 14 | Expired |
| US6708817B2 | Drive and tensioning station of a chain scraper conveyor | Performing Operations; Transporting | 13 | Expired |
| US7201541B2 | Prop head bearing | Fixed Constructions | 11 | Expired |
| US6896121B2 | Conveyor pan | Performing Operations; Transporting | 10 | Expired |
| US7600822B2 | Method for the mining of coal and coal planer installation | Fixed Constructions | 9 | Active |
| US7604113B2 | Chain wheel arrangement | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US6615705B2 | Hydraulic cylinder | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US6837269B2 | Electrohydraulic control device | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7562764B2 | Entry conveyor and pan section for the same | Fixed Constructions | 8 | Active |
| US7393061B2 | Coal plow cutter | Fixed Constructions | 7 | Expired |
| US6959769B2 | Plough chain strand comprising a chain lock link | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US7073870B2 | Bit holder for a ploughing bit of a coal or extraction plough and ploughing bit | Emerging Cross-Sectional Technologies | 7 | Expired |
| US7399039B2 | Baseplate plow guide section | Fixed Constructions | 6 | Active |
| US7631942B2 | Device for milling rock and other materials and method for milling rock or the like using said device | Fixed Constructions | 6 | Expired |
| US7540693B2 | Method for pillar recovery in chamber-and-pillar working and tubbing unit for pillar recovery | Fixed Constructions | 6 | Active |
| US7177709B2 | Controller for underground mining | Physics | 5 | Expired |
| US6966429B2 | Conveyor pan | Performing Operations; Transporting | 5 | Expired |
| US6607074B2 | Drive station for a chain scraper conveyor for mining operations | Performing Operations; Transporting | 5 | Expired |
| US7392896B2 | Trough pan for a face conveyor with a loading ramp | Performing Operations; Transporting | 4 | Expired |
| US7188441B2 | Plow guide for a chain-pulled plow | Fixed Constructions | 3 | Expired |
| US7325670B2 | Conveyor pan | Performing Operations; Transporting | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.