Gardner Denver, Inc.
72Patents
17Active
72Granted
44Portfolio score
Filing activity: Sep 16, 1974 → Mar 14, 2023 · 5 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7335002B2 | Fluid end | Emerging Cross-Sectional Technologies | 146 | Expired |
| US7506574B2 | Self-tightening cover for pump | Emerging Cross-Sectional Technologies | 115 | Active |
| US6419459B1 | Pump fluid cylinder mounting assembly | Emerging Cross-Sectional Technologies | 95 | Expired |
| US9732746B2 | Fluid end of a high pressure plunger pump | Emerging Cross-Sectional Technologies | 89 | Active |
| US7341435B2 | Fluid end | Emerging Cross-Sectional Technologies | 67 | Expired |
| US4054332A | Actuation means for roller guide bushing for drill rig | Fixed Constructions | 63 | Expired |
| US3994350A | Rotary drilling rig | Fixed Constructions | 61 | Expired |
| US3999452A | Tool for preparing tube ends for welding | Emerging Cross-Sectional Technologies | 46 | Expired |
| US6695007B2 | Suction valve | Emerging Cross-Sectional Technologies | 43 | Expired |
| US3961862A | Compressor control system | Mechanical Engineering; Lighting; Heating | 36 | Expired |
| US4128135A | Drill pipe handling mechanism | Fixed Constructions | 34 | Expired |
| US3960035A | Torque responsive speed shifting mechanism for power tool | Performing Operations; Transporting | 27 | Expired |
| US4123188A | Control system for peck drilling tool | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4078618A | Torque controller shutoff mechanism | Performing Operations; Transporting | 24 | Expired |
| US6412516B1 | Dry shut-off cartridge | Emerging Cross-Sectional Technologies | 23 | Expired |
| US7172175B2 | Suction valve | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4068980A | Compressor startup control | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4062411A | Hydraulic percussion tool with impact blow and frequency control | Emerging Cross-Sectional Technologies | 19 | Expired |
| US3970151A | Torque responsive motor shutoff for power tool | Performing Operations; Transporting | 19 | Expired |
| US4052135A | Control system for helical screw compressor | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US3948288A | Hydraulic accumulator | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4066140A | Heavy duty industrial scale | Physics | 18 | Expired |
| US4022550A | Enclosed compressor unit | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4147475A | Control system for helical screw compressor | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US3995700A | Hydraulic rock drill system | Emerging Cross-Sectional Technologies | 15 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.