Osaka Vacuum, Ltd.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F01D NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES 263
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 260
 
  
 
F04D NON-POSITIVE-DISPLACEMENT PUMPS272
 
  
 
F16C SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 169
 
  
 
F25D REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS 145
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 1106

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8853905 Radial direction controller and magnetic bearing apparatus utilizing sameDec 27, 12Oct 07, 14[H02K, F16C]
8449195 Retainer of ball bearingNov 21, 07May 28, 13[F16C]
8337164 Turbomolecular pumpJul 09, 09Dec 25, 12[F04D]
7909583 Pump apparatus and pump unit thereofMar 23, 05Mar 22, 11[F04B]
6435847 Turbo-molecular pumpJul 06, 99Aug 20, 02[F04B]
6123522 Turbo molecular pumpJul 17, 98Sep 26, 00[F25D]
5632597 Thread groove type vacuum pumpMar 28, 96May 27, 97[F01D]
5350275 Turbomolecular pump having vanes with ceramic and metallic surfacesJun 03, 93Sep 27, 94[F01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2010/0078,309 SPUTTERING METHOD AND SPUTTERING APPARATUSAbandonedJan 25, 08Apr 01, 10[C23C]
5221179 Vacuum pumpExpiredOct 01, 91Jun 22, 93[F01D]
5219269 Vacuum pumpExpiredOct 01, 91Jun 15, 93[F01D]
5217346 Vacuum pumpExpiredOct 01, 91Jun 08, 93[F01D]
5160250 Vacuum pump with a peripheral groove pump unitExpiredOct 01, 91Nov 03, 92[F04D]
5074747 Vacuum pumpExpiredSep 14, 90Dec 24, 91[F01D]
4708586 Thread groove type vacuum pumpExpiredAug 14, 86Nov 24, 87[F04D]

Top Inventors for This Owner

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