Metallgesellschaft Aktiengesellschaft

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C07C ACYCLIC OR CARBOCYCLIC COMPOUNDS 8130
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF673
 
  
 
B01D SEPARATION 4130
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 4105
 
  
 
F23D BURNERS 428
 
  
 
F27B FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS420
 
  
 
C21B MANUFACTURE OF IRON OR STEEL 320
 
  
 
C22B PRODUCTION OR REFINING OF METALS 325
 
  
 
F28D HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT 342
 
  
 
B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 285

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6652267 Burner for the partial oxidation of liquid fuels which contain carbonMay 06, 02Nov 25, 03[B05B, F27B, F23D]
6599374 Method for producing a mixture of iron carbide and granular, directly reduced ironJun 26, 00Jul 29, 03[C23C]
6596061 Inorganic anti-corrosive pigments and method for the production thereofMay 04, 01Jul 22, 03[C09D]
6534678 Process for producing tartaric acid from a raw material containing potassium hydrogentartrateMay 03, 99Mar 18, 03[C07C]
6506516 Lithium bisoxalatoborate, the production thereof and its use as a conducting saltDec 28, 00Jan 14, 03[C01B, H01M]
6488742 Method for regenerating a loaded wash liquid from a gas desulfurization facilityDec 06, 99Dec 03, 02[C01B]
6481385 Fluidized bed combustion system with steam generationNov 17, 00Nov 19, 02[F22B]
6454831 Use of a fine-grained product produced during the production of titanium dioxideApr 13, 01Sep 24, 02[C22B]
6436475 Process of treating metallic surfacesDec 17, 99Aug 20, 02[B05D]
6368389 Method for separating vaporous phthalic acid anhydride from a gas streamMay 18, 00Apr 09, 02[B01D]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7322538 Slag crusherExpiredNov 26, 98Jan 29, 08[B02C]
7258841 Reactor for gasifying granular fuels that form a fixed bedExpiredSep 07, 99Aug 21, 07[B01J]
6709750 Hot-melt adhesive for sealing the edge of laminated glassExpiredFeb 22, 01Mar 23, 04[B32B]
6688474 Process for removing relatively coarse-grained solids from a stationary fluidized bedExpiredNov 13, 00Feb 10, 04[B07B]
6663696 Earth conductor for earthing systemsExpiredJun 07, 02Dec 16, 03[B03C]
6627171 Method for producing iron carbide from granulated sponge ironExpiredMar 15, 00Sep 30, 03[C01B]
6627172 Process for preparing sulphuric acid from gases containing SO3 and gaseous nitrosylsulphuric acidExpiredJun 14, 99Sep 30, 03[C01B]
6524362 Method of melting fine grained direct reduced iron in an electric arc furnaceExpiredJul 17, 00Feb 25, 03[C12B]
6500402 Catalyst for oxidizing SO2 to SO3 and utilization of the catalyst in a method for producing sulfuric acidExpiredOct 12, 00Dec 31, 02[C01B]
6488901 Method of adjusting a circulating fluidized bed and use of the methodExpiredJun 08, 00Dec 03, 02[B01J, C01G]
6413415 Method for high-temperature short-time distillation of residual oilsExpiredJan 03, 00Jul 02, 02[B01D]
6237368 Process for the regulating or controlling the NOx content of exhaust gases given off during the operating of glass melting furnaces with several burners run alternatelyExpiredAug 30, 99May 29, 01[C03B]
6238547 Process for carrying out chemical reactions in an electrochemical cellExpiredJul 09, 99May 29, 01[B01D]
6224720 Electrolytic cell with removable bipolar electrodesExpiredJul 09, 99May 01, 01[C25D, C25C, C25B]
6191295 Stable trimeric isopropoxyalane, method of producing the same, and use thereofExpiredJan 12, 00Feb 20, 01[C07F]
6153015 Process for removing soap-contaminated conversion layers on metal workpiecesExpiredDec 08, 98Nov 28, 00[C23G]
6136067 Process of monitoring the operability of a filtering plant for dedusting gasesExpiredNov 13, 98Oct 24, 00[B01D]
6087139 Process for producing citric acid and/or citratesExpiredOct 22, 98Jul 11, 00[C12P]
6051155 Preparations containing waxExpiredAug 17, 99Apr 18, 00[C14C, A01N, C08L]
6015539 Fluidized bed process for producing alumina from aluminum hydroxideExpiredSep 03, 98Jan 18, 00[C01F]

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