Stal Refrigeration AB
27Patents
0Active
27Granted
30Portfolio score
Filing activity: Jul 25, 1972 → Mar 7, 1990
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4684330A | Drive for rotary compressor | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4227755A | Bearing arrangement for shaft of rotary compressor | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US5108269A | Method of controlling a rotary compressor | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4049233A | Device for establishing and breaking a fluid communication | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US3939867A | Valve for compressors | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4124046A | Connecting device for intermittent air flow | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4362472A | Rotary compressor with variable built-in volume ratio | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4021166A | Rotary vane compressor with increased outlet through-flow area | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4229949A | Refrigeration system | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US4877380A | Control system for controlling the internal volume in a rotary compressor | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4932844A | Control section for a control system for controlling the internal volume of a rotary compressor | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4741177A | Oil separator in a coolant system | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4746277A | Rotary compressor with pressure pulse suppression | Emerging Cross-Sectional Technologies | 8 | Expired |
| US3981703A | Multistage vane type rotary compressor | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4224014A | Rotary compressor with liquid injection | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US5044909A | Valve device for control of the inner volume relation in a screw type rotary compressor | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4099896A | Rotary compressor | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4737082A | Lift valve for rotary screw compressors | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4185949A | Screw compressor with bearing unloading means | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4488858A | Compressor with radial inlet to screw-formed rotor | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4565508A | Device for controlling the volumetric capacity of a screw compressor | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4239467A | Rotary compressor with valved liquid injection through the rotor | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4845954A | Method and device for the manufacture of an ice slurry | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4474019A | Method of recirculating oil in refrigerating systems | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4618272A | Device for fixing a thrust bearing | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.