Patent assignee · IT · COMPANY

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

PatentTitleAreaCited byStatus
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.