LEYBOLD VAKUUM GMBH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F03C POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS 222
 
  
 
F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS 245
 
  
 
B01D SEPARATION 1133
 
  
 
F01C ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES 128
 
  
 
F03B MACHINES OR ENGINES FOR LIQUIDS 123
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 161
 
  
 
G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR166

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7544046 Vacuum pumpApr 15, 03Jun 09, 09[F04B]
7240536 Test-gas leak detectorDec 19, 03Jul 10, 07[G01M]
7186098 Eccentric pump and method for operation of said pumpFeb 18, 03Mar 06, 07[F04C]
7153093 Vacuum pumpFeb 18, 03Dec 26, 06[F04C]
7074026 Multi-stage helical screw rotorOct 30, 01Jul 11, 06[F03C]
7056108 Cooled screw-type vacuum pumpOct 30, 02Jun 06, 06[F03C]
6435811 Friction vacuum pump with a stator and a rotorNov 08, 00Aug 20, 02[F03B]
6277177 Gas passage with selectively acting penetration surface and process for producing the penetration surfaceDec 08, 97Aug 21, 01[B01D]
6019585 Oil-sealed vane-type rotary vacuum pump with oil feedJan 14, 98Feb 01, 00[F01C]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7559752 Dual-shaft vacuum pumpExpiredMay 23, 03Jul 14, 09[F04B]
2009/0028,731 Ball bearing and a vacuum pump that is equipped with a bearing of this typeAbandonedAug 18, 08Jan 29, 09[F16C, F04D]
7481066 Vacuum deviceExpiredJul 14, 04Jan 27, 09[B01D]
7415829 Piston compressorExpiredDec 09, 03Aug 26, 08[F25D]
7264439 Evacuating deviceExpiredMay 16, 03Sep 04, 07[F01D]
7232295 Tempering method for a screw-type vacuum pumpExpiredOct 30, 02Jun 19, 07[F01C]
2007/0081,889 Multi-stage friction vacuum pumpAbandonedOct 28, 04Apr 12, 07[F01D]
2007/0071,610 Method for controlling the drive motor of a positive displacement vaccum pumpAbandonedNov 05, 04Mar 29, 07[F04B]
7156922 Multi-chamber installation for treating objects under vacuum, method for evacuating said installation and evacuation system thereforExpiredSep 28, 02Jan 02, 07[C23C]
2006/0280,634 Piston vacuum pumpAbandonedApr 10, 04Dec 14, 06[F04B]
2006/0254,289 Vacuum deviceAbandonedJul 14, 04Nov 16, 06[B01D]
2006/0201,163 Heat-storing mediumAbandonedApr 15, 04Sep 14, 06[F28D, F25B, F25D]
7097431 Mechanical kinetic vacuum pumpExpiredAug 09, 01Aug 29, 06[F03B]
7090460 Pump embodied as a side channel pumpExpiredSep 28, 01Aug 15, 06[F01D]
7090469 Turbomolecular pumpExpiredMar 15, 02Aug 15, 06[F04B]
2006/0088,238 Ball bearing and a vacuum pump that is equipped with a bearing of this typeAbandonedOct 24, 03Apr 27, 06[F16C]
7011491 Friction vacuum pumpExpiredJan 24, 01Mar 14, 06[F01D]
6964559 Two shaft vacuum pump with cantilevered rotorsExpiredMar 15, 01Nov 15, 05[F04B, F01C]
2005/0220,606 Method for producing the rotor of a drag vacuum pump and a rotor produced according to this methodAbandonedSep 08, 04Oct 06, 05[F01D]
6948921 Vacuum pump comprising an outletExpiredAug 23, 00Sep 27, 05[F04B]

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