Rolls-Royce and Associates, Limited

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 250
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 2204
 
  
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 2152
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 155
 
  
 
B23K SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 192
 
  
 
B26D CUTTING; DETAILS COMMON TO MACHINES FOR SEVERING, e.g. BY CUTTING, PERFORATING, PUNCHING, STAMPING-OUT 136
 
  
 
C22C ALLOYS 171
 
  
 
F28D HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT 144
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 158

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5984766 Sample removing toolNov 18, 96Nov 16, 99[B26D, G01N]
5793200 Position responsive magnetic sensing elements for sensing the position of a member at a remote siteOct 29, 93Aug 11, 98[G01F]
5660939 Stainless steel alloyFeb 28, 96Aug 26, 97[C22C]
5565687 Liquid level monitor having a plurality of proximity sensors and a sensor actuating elementOct 18, 94Oct 15, 96[G01N]
5527632 Hydrocarbon fuelled fuel cell power systemMay 05, 95Jun 18, 96[H01M]
5465484 Heat exchangerOct 17, 94Nov 14, 95[B21D]
5465785 Heat exchangerAug 23, 93Nov 14, 95[F28F]
5458857 Combined reformer and shift reactorNov 22, 93Oct 17, 95[F28D]
5383518 Heat exchangerAug 04, 93Jan 24, 95[F28F]
5358799 Fuel cellJun 28, 93Oct 25, 94[H01M]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5886559 Signal generating apparatus and methodExpiredAug 09, 95Mar 23, 99[H03K]
5860316 Capacitance probeExpiredSep 09, 96Jan 19, 99[G01F]
5573060 Heat exchangerExpiredApr 14, 95Nov 12, 96[F28F]
5571968 Apparatus for mounting a plurality of ultrasonic probes for movement in specified directions for detecting defects in a bodyExpiredJul 15, 93Nov 05, 96[G01N]
5270950 Apparatus and a method for locating a source of acoustic emission in a materialExpiredSep 17, 91Dec 14, 93[G01H]
5124554 Explosives detectorExpiredFeb 19, 91Jun 23, 92[G01N]
5102616 Full pressure passive emergency core cooling and residual heat removal system for water cooled nuclear reactorsExpiredJul 19, 89Apr 07, 92[G21C]
5089218 Water cooled nuclear reactor with a diaphragm pressurizers for low pressures and temperaturesExpiredJul 19, 89Feb 18, 92[G21C]
5057994 Control system for industrial plantExpiredJun 23, 89Oct 15, 91[G06F]
5053190 Water cooled nuclear reactor and pressurizer assemblyExpiredApr 06, 89Oct 01, 91[G21C]
5045274 Water cooled nuclear reactorsExpiredJun 12, 89Sep 03, 91[G21C]

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