MALLEN RESEARCH LIMITED PARTNERSHIP

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F01C ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES 722
 
  
 
F02B INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 765
 
  
 
F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS 443
 
  
 
F03C POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS 321

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9664047 Positive displacement rotary devices with uniquely configured voidsJan 13, 15May 30, 17[F04C, F03C, F01C]
9664048 Positive displacement rotary devices with uniform tolerancesJan 13, 15May 30, 17[F04C, F03C, F01C]
8956134 Fixed-vane positive displacement rotary devicesAug 23, 12Feb 17, 15[F04C, F03C]
6435851 Vane pumping machine utilizing invar-class alloys for maximizing operating performance and reducing pollution emissionsDec 18, 00Aug 20, 02[F04C, F01C]
6386172 Variable bandwidth striated charge for use in a rotary vane pumping machineAug 02, 00May 14, 02[F02B]
6321713 Hot wall combustion insert for a rotary vane pumping machineAug 02, 00Nov 27, 01[F02B]
6244240 Rotary positive-displacement scavenging device for rotary vane pumping machineApr 30, 99Jun 12, 01[F02B]
6162034 Vane pumping machine utilizing invar-class alloys for maximizing operating performance and reducing pollution emissionsMar 01, 99Dec 19, 00[F01C]
6120271 Vane slot roller assembly for rotary vane pumping machine and method for installing sameNov 04, 98Sep 19, 00[F01C]
6086346 Cooling system for a rotary vane pumping machineNov 04, 98Jul 11, 00[F01C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6241497 Cooling system for a rotary vane pumping machineExpiredMay 19, 00Jun 05, 01[F03C]
5474043 Helicotoroidal vane rotary engineExpiredJun 17, 94Dec 12, 95[F02B]

Top Inventors for This Owner

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