Giampaolo Levi

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Turin, IT

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Patents Grantslast 30 patents

Information Patent Grant
Turbomolecular pump
- Patent number 5,688,106
- Issue date Nov 18, 1997
- Varian Associates, Inc.
- Roberto Cerruti
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Non-centric improved pumping stage for turbomolecular pumps
- Patent number 5,456,575
- Issue date Oct 10, 1995
- Varian Associates, Inc.
- John C. Helmer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Tangential flow pumping channel for turbomolecular pumps
- Patent number 5,449,270
- Issue date Sep 12, 1995
- Varian Associates, Inc.
- Giampaolo Levi
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Pumping state turbomolecular pumps
- Patent number 5,387,079
- Issue date Feb 7, 1995
- Varian Associates, Inc.
- Giampaolo Levi
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Turbomolecular pump
- Patent number 5,238,362
- Issue date Aug 24, 1993
- Varian Associates, Inc.
- Fausto Casaro
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Stator assembly for a turbomolecular pump
- Patent number 5,158,426
- Issue date Oct 27, 1992
- Varian Associates, Inc.
- Fausto Casaro
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...