NATIONAL WESTMINSTER BANK PLC

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
A01K ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS543
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 550
 
  
 
B01D SEPARATION 2132
 
  
 
G11C STATIC STORES 1150

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5868926 Rotating biological filter systemMay 02, 95Feb 09, 99[C02F]
5853591 Rotating biological aquarium filter systemOct 03, 94Dec 29, 98[A01K]
5841786 Testing of memory contentJan 13, 97Nov 24, 98[G11C]
5779885 Rotating biological filter systemDec 30, 94Jul 14, 98[C02F]
5679253 Rotating biological aquarium filter systemFeb 01, 95Oct 21, 97[C02F]
5618419 Filter cartridge with back structure defining a weirMay 24, 94Apr 08, 97[B01D]
5603831 Dual impeller pumpMay 24, 94Feb 18, 97[A01K, C02F]
5449454 Gas expelling device for a canister type filterJan 13, 93Sep 12, 95[A01K, B01D]
5423978 Rotating biologic aquarium filter systemJan 14, 93Jun 13, 95[A01K]
5419831 Rotating biological aquarium filter systemJan 14, 93May 30, 95[C02F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5205158 Sampling rheometer and methodExpiredJul 26, 91Apr 27, 93[G01N]
5115669 Measuring shear viscosity of fluidsExpiredOct 05, 90May 26, 92[G01N]
5025185 Bubble trap for epoxy sealant in a submersible electric motorExpiredJun 07, 88Jun 18, 91[H02K, F04D]
5002660 Compact aquarium filterExpiredJun 07, 88Mar 26, 91[B01D]
4931331 Laminated tile product, method for producing the same and method for installing the sameExpiredApr 05, 88Jun 05, 90[B32B]
4817416 On-line rheological measurementsExpiredJun 13, 88Apr 04, 89[G01N]
4730498 Fixture for holding a bending test specimenExpiredJun 01, 87Mar 15, 88[G01N]
4640120 Impact testing apparatusExpiredJun 21, 85Feb 03, 87[G01N]
4601195 Apparatus and method for measuring viscoelastic properties of materialsExpiredApr 11, 85Jul 22, 86[G01N]
4601821 Freestanding aquarium filterExpiredJun 10, 83Jul 22, 86[A01K]
4501155 Compensated rheometerExpiredJun 29, 83Feb 26, 85[G01N]
4483769 Filter cartridgeExpiredJan 13, 83Nov 20, 84[B01D]
4468953 Viscosity and elasticity of a fluidExpiredJul 22, 82Sep 04, 84[G01N]
D270613 Wire stripping measuring guideExpiredJan 15, 81Sep 20, 83[D080]
4391233 Internal-combustion engineExpiredApr 03, 81Jul 05, 83[F02B]
4211443 Electric strikeExpiredJan 17, 78Jul 08, 80[E05B]

Top Inventors for This Owner

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