DAEWOO ENGINEERING & CONSTRUCTION CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 6103
 
 
 
C10L FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUEFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS 636
 
 
 
C07C ACYCLIC OR CARBOCYCLIC COMPOUNDS 3135
 
 
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 253
 
 
 
B01D SEPARATION 1133
 
 
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 141
 
 
 
B65G TRANSPORT OR STORAGE DEVICES, e.g. CONVEYERS FOR LOADING OR TIPPING; SHOP CONVEYER SYSTEMS; PNEUMATIC TUBE CONVEYERS 166
 
 
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF178
 
 
 
E01D BRIDGES 114
 
 
 
E04B GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS 146

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2014/0330,055 METHOD AND APPARATUS FOR IMPROVING HEAT TRANSFER AND REACTION EFFICIENCY OF GAS HYDRATE REACTOR USING SCRAPERSep 19, 12Nov 06, 14[C10L]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9839887 Apparatus for storing gas hydrate pelletsJun 27, 13Dec 12, 17[C10L, B65G, B01F]
9744508 Apparatus for revaporizing gas hydrate pelletsJun 27, 13Aug 29, 17[C07C, B01J]
9308507 Device for revaporizing natural gasAug 23, 10Apr 12, 16[F17C, B01J, B01D]
9302239 Gas-liquid circulating type of hydrate reactorSep 18, 12Apr 05, 16[C01B, C10L, C07C, B01J]
9255234 Device and method for manufacturing natural gas hydrateAug 23, 10Feb 09, 16[C10L, B01J]
8486340 Apparatus and method for continuously producing and pelletizing gas hydrates using dual cylinderMay 10, 10Jul 16, 13[B01J]
8367880 Device and method for continuous hydrate production and dehydration by centrifugal forceMay 24, 10Feb 05, 13[C07C, B01J]
8180588 Compensation method for structural deformation occurring during construction of super tall buildingJul 29, 11May 15, 12[G01M, G06F, E04B, G01C]
7604733 Apparatus for biological removal of phosphorus and nitrogen using granulated methane-oxidizing bacteriaMar 16, 09Oct 20, 09[C02F]
7546656 Method of installing prefabricated, segment concrete filled tube membersMay 10, 06Jun 16, 09[E01D]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2008/0229,684 Hydraulic jack systems to be installed to the outrigger to perimeter column joints to automatically adjust differential column shortening and provide additional structural dampingAbandonedMar 12, 08Sep 25, 08[E04B, E04H]
2006/0000,108 Method and apparatus for treating sludge using micro-wave and hot airAbandonedSep 02, 05Jan 05, 06[F26B]
6302038 Anti-erosion system of grate in stoker-type incineratorExpiredMay 25, 99Oct 16, 01[F23H]
6177007 High efficiency apparatus for treating nitrogen and phosphorous contained in sewageExpiredOct 01, 98Jan 23, 01[C02F]
5935299 Apparatus and method of spray dryer/bag filter using circulating shield airExpiredSep 04, 97Aug 10, 99[B01F, B01D]

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