Her Majesty the Queen in right of Canada, as represented by the Minister of Energy, Mines and Resources

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C10G CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION 359
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF178
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1205
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 1158

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5565771 Apparatus for increasing linear resolution of electromagnetic wire rope testingJan 18, 95Oct 15, 96[G01N, G01R]
5322617 Upgrading oil emulsions with carbon monoxide or synthesis gasAug 07, 92Jun 21, 94[C01B, C10G]
5225159 Deodorization of sewage sludge-derived oilsDec 13, 91Jul 06, 93[C10G]
5096566 Process for reducing the viscosity of heavy hydrocarbon oilsFeb 11, 91Mar 17, 92[C10G]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5463907 Vibrating wire range extenderExpiredApr 26, 94Nov 07, 95[G01L]
5463158 Oligomerization of low molecular weight olefins in ambient temperature meltsExpiredMar 07, 94Oct 31, 95[C07C]
5457252 Catalyst composition for the selective hydrogenation of benzene and process for such hydrogenationExpiredSep 02, 93Oct 10, 95[C07C]
5427607 Process for the recovery of metallic iron from slags and other residuesExpiredNov 07, 94Jun 27, 95[C21D]
5405063 Nozzle for fluidizing particulate materialExpiredDec 09, 93Apr 11, 95[B65D]
5336389 Long lasting alkali and alkaline earth metal sensorExpiredJun 08, 92Aug 09, 94[G01N]
5312483 Adhesion of asphalt to aggregatesExpiredDec 27, 91May 17, 94[C09D]
5304233 Recovery of platinum group metals (PGM) from acidic solutions by reduction precipitation with sodium borohydrideExpiredJan 30, 91Apr 19, 94[C22B]
5286451 Apparatus for controlled delivery of particulate materialExpiredMay 21, 93Feb 15, 94[G01N, B01L, B65G]
5261945 Selective recovery of gold and silver from carbonate eluatesExpiredJul 22, 92Nov 16, 93[C22B]
5256374 Sample introduction for spectrometersExpiredMar 29, 91Oct 26, 93[G01N]
5254763 Catalyst and process for the selective hydrogenation of benzeneExpiredDec 02, 91Oct 19, 93[C07C]
5234494 Softening agents for recycling asphalt pavementExpiredJan 02, 92Aug 10, 93[C08L]
5232286 Long lasting thermocouple for high temperature measurements of liquid metals, mattes and slagsExpiredApr 10, 91Aug 03, 93[G01K, H01L]
5223023 Recovery of gold from solution by reduction-precipitation with stabilized alkali metal borohydrideExpiredJan 30, 91Jun 29, 93[C22B]
5193396 Tensile testing apparatusExpiredSep 25, 91Mar 16, 93[G01N]
5180505 Dewatering methodExpiredJun 10, 91Jan 19, 93[F26B, B01D]
5178665 Recovery of dissolved gold by sodium borohydride (NaBH.sub.4) reductionExpiredJan 30, 91Jan 12, 93[C22B]
5152175 Bubble measurement cellExpiredNov 14, 90Oct 06, 92[G01N]
5135624 Electrolytic hydrometallurgical silver refiningExpiredJan 23, 91Aug 04, 92[C25C]

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