Pfister GmbH
61Patents
1Active
61Granted
37Portfolio score
Filing activity: Jun 26, 1978 → Oct 18, 2006 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4528848A | Device for the continuous gravimetric metering and pneumatic conveyance of pourable material | Physics | 62 | Expired |
| US4226540A | Method for the contactless determination of features of meat quality | Physics | 54 | Expired |
| US4744254A | Force measuring device | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4541066A | Method and apparatus for checking the functions of a display system | Physics | 27 | Expired |
| US4413279A | Method for contact-free determination of quality features of a test subject of the meat goods class | Physics | 26 | Expired |
| US4984468A | Pressure sensor and method for manufacturing it | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5167385A | Aircraft and system and method for operating thereof | Performing Operations; Transporting | 25 | Expired |
| US4864874A | Force measuring device | Physics | 24 | Expired |
| US5670751A | Bulk material weighing container with pressure feedback | Physics | 24 | Expired |
| US6545231B1 | Chain conveyor | Physics | 18 | Expired |
| US4739666A | Flat-spread force measuring device | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4661024A | Method and apparatus for continuous gravimetric metering and feeding of pourable material | Performing Operations; Transporting | 17 | Expired |
| US5255427A | Ceramic hollow bodies and method of manufacturing such bodies | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5060965A | Trailer coupling with force sensing means | Physics | 16 | Expired |
| US4984467A | Transducer for pressures and/or vibrations and method for manufacturing thereof | Performing Operations; Transporting | 15 | Expired |
| US4491016A | Method and apparatus for measuring the pressure of a fluid | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4711127A | Method and apparatus for measuring the pressure of a fluid | Physics | 14 | Expired |
| US7175048B2 | Method and device for gravimetric dosing bulk material | Physics | 14 | Expired |
| US4965729A | Method and apparatus for improving the operational characteristics of a vehicle | Performing Operations; Transporting | 13 | Expired |
| US4213509A | Hydrostatic setting apparatus for support of loads | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4827240A | Force measuring device | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6964550B2 | Chain conveyor in the form of scales | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4754653A | Force measuring device | Physics | 10 | Expired |
| US4770050A | Force or pressure measuring device | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4644805A | Force measuring device | Physics | 9 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.