LEYBOLD AKTIENGESELLSCHAFT

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C23C COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 1091
 
  
 
G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR1057
 
  
 
B01D SEPARATION 5129
 
  
 
G01L MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE 452
 
  
 
B22D CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 247
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 2105
 
  
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 2109
 
  
 
B05C APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 144
 
  
 
B08B CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL 157
 
  
 
C23G CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS 112

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5923172 Penning type gauge head with ignition aidJun 10, 97Jul 13, 99[G01L, G01N]
5907092 Countercurrent sniffing leak detectorJun 06, 97May 25, 99[G01M]
5900537 Test gas leakage detectorJul 03, 97May 04, 99[G01M]
5871338 Vacuum pump with a gas ballast deviceJan 29, 96Feb 16, 99[F04C]
5829794 Vacuumtight connectionOct 18, 96Nov 03, 98[F16I]
5821404 Test gas leak indicatorSep 06, 96Oct 13, 98[G01M]
5786529 Search gas detector with vacuum pump and process for operating such a search gas detectorFeb 01, 96Jul 28, 98[G01M]
5770956 Measurement amplifierJun 13, 96Jun 23, 98[H03C, G06G]
5729065 Magnetic bearing cell with rotor and statorSep 13, 95Mar 17, 98[H02K]
5708194 Test gas leak detectorSep 06, 96Jan 13, 98[G01M]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6019581 Friction vacuum pump with cooling arrangementExpiredOct 15, 96Feb 01, 00[F04B]
5975857 Process for operating a dry-compression vacuum pump as well as a suitable vacuum pump for implementation of this processExpiredNov 03, 97Nov 02, 99[F04B]
5970213 Apparatus for heating a transparent substrate utilizing an incandescent lamp and a heating disk emitting infrared wavelengthsExpiredMar 01, 94Oct 19, 99[H05B, F27D]
5961124 Sealing system for a vertically disposed shaftExpiredApr 28, 97Oct 05, 99[F16J]
5878580 Method of operating a cryogenic cooling device, and a cryogenic cooling device suitable for operation by this methodExpiredOct 20, 97Mar 09, 99[F25B]
5880357 Leak detector with vacuum pumps and operating process for sameExpiredMay 12, 97Mar 09, 99[G01M]
5822842 Method for masking a disk shaped substrateExpiredOct 10, 95Oct 20, 98[B23P]
5789670 Rain sensorExpiredFeb 12, 97Aug 04, 98[G01W]
5766348 Rotating head for crystal pulling systems for carrying out the czochralski processExpiredMar 24, 97Jun 16, 98[C30B]
5749716 Integrated oil pump rotor and coupling piece for an oil-sealed vacuum pumpExpiredJan 29, 96May 12, 98[F04B]
5718565 Apparatus and process for operating a dry-compression vacuum pumpExpiredApr 12, 95Feb 17, 98[F04B]
5697771 Vacuum pump with oil separatorExpiredFeb 15, 96Dec 16, 97[F04C]
5695316 Friction vacuum pump with pump sections of different designsExpiredOct 30, 95Dec 09, 97[F01D]
5662456 Friction vacuum pump with bearing supportExpiredOct 30, 95Sep 02, 97[F04D]
5660535 Method of operating a claw-type vacuum pump and a claw-type vacuum pump suitable for carrying out the methodExpiredAug 09, 96Aug 26, 97[F04C]
5658114 Modular vacuum system for the treatment of disk-shaped workpiecesExpiredFeb 15, 95Aug 19, 97[F16J]
5611858 Apparatus for transporting discoidal substrates in a vacuum coating apparatusExpiredOct 04, 94Mar 18, 97[B65G]
5558751 Dual cathode sputter coating apparatusExpiredFeb 08, 95Sep 24, 96[C23C]
5556477 Transport device for substrates to be coated in a vacuum coating systemExpiredMay 24, 95Sep 17, 96[C23C]
5553998 Gas friction vacuum pump having at least three differently configured pump stages releasably connected togetherExpiredNov 16, 94Sep 10, 96[F01D]

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