Varian, S.p.A.
22Patents
4Active
22Granted
37Portfolio score
Filing activity: Aug 22, 1983 → Sep 18, 2006 · 4 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7553123B2 | Annular support for rolling bearings | Mechanical Engineering; Lighting; Heating | 25 | Active |
| US4631002A | Ion pump | Electricity | 19 | Expired |
| US5325708A | Detector for helium leaks | Physics | 9 | Expired |
| US7049823B2 | Ionization vacuum gauge | Electricity | 9 | Expired |
| US7141096B2 | Gas-selective permeable membrane and method of manufacturing thereof | Performing Operations; Transporting | 9 | Expired |
| US7030620B2 | Ionization vacuum gauge | Physics | 6 | Expired |
| US6877949B2 | Pumping stage for a vacuum pump | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US6676368B2 | Turbine pump with a stator stage integrated with a spacer ring | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US6627837B1 | Method of manufacturing a stator stage for a turbine pump | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US7334481B2 | Pressure sensor with improved vibrating microassembly and optical detection system | Physics | 3 | Expired |
| US7059192B2 | Pressure sensor | Physics | 3 | Expired |
| US7354254B2 | Compact vacuum pump | Electricity | 3 | Expired |
| US4713619A | Electronic device for feeding ion pump | Electricity | 3 | Expired |
| US7062954B2 | Leak detector | Physics | 2 | Expired |
| US7588426B2 | Oil rotary vacuum pump and manufacturing method thereof | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US7621721B2 | Vacuum pumping device with electronic control of the motor | Electricity | 2 | Expired |
| US7083398B2 | Vibrating pumping stage for molecular vacuum pumps, and molecular vacuum pump with vibrating pumping stages | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US7597013B2 | Device and method for detecting the presence of test gas | Physics | 1 | Active |
| US7628577B2 | Vacuum pumps with improved pumping channel configurations | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US7134835B2 | Process for manufacturing a stator for vacuum pump and stator obtained thereby | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US6672828B2 | Vacuum pump | Mechanical Engineering; Lighting; Heating | 0 | Expired |
| US5017836A | Electronic feeder for an ion pump | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.