GAZ DE FRANCE

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01V GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS 773
 
  
 
F24H FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, IN GENERAL 225
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 2445
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 1108
 
  
 
C07C ACYCLIC OR CARBOCYCLIC COMPOUNDS 1137
 
  
 
C10G CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION 161
 
  
 
F22B METHODS OF STEAM GENERATION; STEAM BOILERS 122
 
  
 
F25B REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 167
 
  
 
F25D REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS 145
 
  
 
F28D HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT 144

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7420879 Device for seismic emission in an underground formation and method for implementing sameSep 24, 03Sep 02, 08[G01V]
7388811 Method for separating microseismic signals from seismic signals emitted by one or several sourcesOct 01, 03Jun 17, 08[G01V]
7325647 Mobile system for seismic emission with fixed coupling devices, and method thereforDec 12, 02Feb 05, 08[G01V]
7072809 Method for modelling fluid displacements in a porous environment taking into account hysteresis effectsJul 10, 01Jul 04, 06[G06F]
6714867 Method for seismic monitoring of an underground zone by simultaneous use of sererval vibroseismic sourcesOct 15, 01Mar 30, 04[G01V]
6598001 Method of analyzing acquired signals for automatic location thereon of at least one significant instantJul 24, 00Jul 22, 03[G06F, G01R]
6338394 Compact vibrator and seismic monitoring or prospecting method using such a vibratorMar 24, 00Jan 15, 02[H01L, G01V]
6049508 Method for seismic monitoring of an underground zone under development allowing better identification of significant eventsDec 07, 98Apr 11, 00[G01V]
5976352 Process for thermal conversion of hydrocarbons to aliphatic hydrocarbons which are more unsaturated than the starting products, combining a steam cracking step and a pyrolysis stepMay 06, 97Nov 02, 99[C07C, C10G]
5967137 High efficiency direct-contact high temperature water heaterOct 14, 97Oct 19, 99[F24H, F22B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2009/0164,307 METHOD OF OPTIMIZING THE FILLING OF A STORAGE FACILITYAbandonedDec 18, 08Jun 25, 09[G06Q]
2005/0252,552 Device insertable in a pipeline, with improved capacity for remaining in positionAbandonedMay 11, 05Nov 17, 05[G05D]
6509567 Method and apparatus for detecting gasesExpiredMay 30, 01Jan 21, 03[G01N]
2002/0035,035 Stable, highly active perovskite catalysts for complete oxidation at high temperatures, and the process for their preparationAbandonedJun 18, 01Mar 21, 02[B01J, C01G]
6157455 Method and apparatus for determining the calorific value of a natural gas optically and in real timeExpiredJun 05, 98Dec 05, 00[G01N]
6145544 Flow conditioner for a gas transport pipeExpiredFeb 16, 99Nov 14, 00[F15D, B01F]
6141987 Absorption refrigerating system and working mixture for said systemExpiredDec 02, 99Nov 07, 00[F25B]
6082994 Gas burner for cooking apparatusExpiredMar 26, 99Jul 04, 00[F23D]
6065956 Universal mixer device for mixing two gaseous fluidsExpiredNov 06, 98May 23, 00[F23N]
6063351 Catalyst, in particular for reducing NO.sub.x, and method for reducing NO.sub.xExpiredApr 09, 99May 16, 00[B01D]
5899092 ChillerExpiredOct 09, 97May 04, 99[F25B]
5860409 Gas cookstoveExpiredDec 27, 95Jan 19, 99[F24C]
5839613 Device for pushing a tube of plastics material for internally casing a metal piping to be renovatedExpiredMar 14, 97Nov 24, 98[B65H]
5811067 Catalytic method for selectively reducing nitrogen oxidesExpiredMar 14, 97Sep 22, 98[B01J, B01D]
5771845 Vaporization method deviceExpiredApr 08, 96Jun 30, 98[F24F]
5749328 Boiler for heating a working fluidExpiredNov 16, 95May 12, 98[F22B]
5749356 Low NOX and CO emissions direct contact high temperature water heaterExpiredJun 13, 97May 12, 98[F24H]
5573728 Device for selective detection of gasExpiredJan 28, 94Nov 12, 96[G01N]
5523234 Equipment for the anaerobic fermentation of organic materialsExpiredJun 17, 94Jun 04, 96[C12M]
5496524 Reactor for the thermal conversion of methaneExpiredAug 19, 94Mar 05, 96[C07C, B01J]

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