Maerz Ofenbau AG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
F27B FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS519
 
 
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 464
 
 
 
F27D DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE 322
 
 
 
F23B METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL 110
 
 
 
F23G CREMATION FURNACES; CONSUMING WASTE BY COMBUSTION111
 
 
 
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 151

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2015/0353,421 METHOD FOR BURNING LUMP MATERIALSep 09, 13Dec 10, 15[F23L, C04B, F27B, F23B]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9919965 Method for burning lump materialSep 09, 13Mar 20, 18[F23L, C04B, F27B, F23B]
9266774 Method for burning pelletized goodMay 09, 12Feb 23, 16[C04B, F23G, F27B]
9011143 Parallel flow regenerative lime kiln and method for the operation thereofSep 15, 10Apr 21, 15[C04B, F27D, F27B]
7833012 Process and apparatus for calcining solids or sludgesNov 02, 07Nov 16, 10[F27B]
6461154 Method for burning carbonate-containing materialApr 06, 01Oct 08, 02[F27D]
5460517 Shaft kiln for burning a lumpy mineral chargeFeb 25, 93Oct 24, 95[F27D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7544321 Process container with cooling elementsExpiredMay 27, 04Jun 09, 09[F28F]
7384263 Process for burning lumps of material with lean gasExpiredMar 22, 04Jun 10, 08[]
4810190 Method and apparatus calcining mineral raw materials utilizing solid fuelExpiredOct 13, 81Mar 07, 89[F27D]
4534731 Process and apparatus for calcining limestoneExpiredJul 12, 83Aug 13, 85[F27D, F27B]
4482280 Feeding apparatus for uniflow regenerative shaft furnaces for calcining limestone and similar mineral materialsExpiredJan 21, 82Nov 13, 84[F27B]
4480991 Process of and apparatus for operating a shaft furnaceExpiredDec 17, 82Nov 06, 84[F27D, F27B, F23Q]
4392821 Calcining furnace with gas-permeable wall structureExpiredOct 05, 81Jul 12, 83[F23M, F27D, F27B]
4382779 Regenerative shaft furnace for burning carbonate-containing raw materialsExpiredDec 17, 80May 10, 83[F27D, C01F, C01B]
4315735 Process for calcining mineral raw materials in a uniflow regenerative shaft furnaceExpiredOct 22, 79Feb 16, 82[C22B, F27D, C01F]
4289482 Fuel lance structure for a uniflow regenerative shaft furnaceExpiredSep 25, 79Sep 15, 81[F27D, F27B]

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