Klaus Rofall

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K?ouml;ln, DE

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Patents Grantslast 30 patents

Information Patent Grant
Tempering method for a screw-type vacuum pump
- Patent number 7,232,295
- Issue date Jun 19, 2007
- Oerlikon Leybold Vacuum GmbH
- Hartmut Kriehn
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Cooled screw-type vacuum pump
- Patent number 7,056,108
- Issue date Jun 6, 2006
- Leybold Vakuum GmbH
- Manfred Behling
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Two shaft vacuum pump with cantilevered rotors
- Patent number 6,964,559
- Issue date Nov 15, 2005
- Leybold Vakuum GmbH
- Manfred Behling
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Two-shaft vacuum pump
- Patent number 6,863,511
- Issue date Mar 8, 2005
- Leybold Vakuum GmbH
- Hartmut Kriehn
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

Information Patent Application
Tempering method for a screw-type vacuum pump
- Publication number 20050019169
- Publication date Jan 27, 2005
- Hartmut Kriehn
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Cooled screw-type vacuum pump
- Publication number 20040265160
- Publication date Dec 30, 2004
- Manfred Behling
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Two-shaft vacuum pump
- Publication number 20040091380
- Publication date May 13, 2004
- Hartmut Kriehn
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Vacuum pump with two co-operating rotors
- Publication number 20030152468
- Publication date Aug 14, 2003
- Manfred Behling
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...