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• Patent No. 10-0436985
  Spiral Axial Hot Air Dryer (Korea)

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• Patent No. 10-0489614
  Terephthalic acid Pseudomonas sp.T-1, a microorganism with excellent degradation capability, and a method for treating wastewater containing terephthalic acid using the same (Korea)

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• Patent No. 10-0455643
  Pseudomona sp.EG-2, a novel microorganism with high concentration of ethylene glycol degradation capability, and a method for treating wastewater containing ethylene glycol using the same (Korea)

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• Patent No. 10-0498123
  Spiral Axial Hot Air Dryer (Korea)

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• Patent No. 10-0619143
  Organic waste disposal device (Korea)

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• Patent No. 10-0725747
  Sludge dewatering and drying equipment (Korea)

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• Patent No. 10-0598675
  A filter plate for filter press, a filter cloth cleaner for cleaning the filter cloth of the above filter plate, and filter press containing the same (Korea)

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• Patent No. 10-0726873
  A clean-out for a screw transfer device and a screw drying device equipped with it (Korea)

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• Patent No. 10-0663191
  A filter plate equipped with a filter cloth clean-out and a filter cake batch discharge type filter press with the above filter plate installed (Korea)

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• Patent No. 10-0736369
  Filter press with multiple hydraulic cylinders (Korea)

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• Patent No. 10-1262639
  A Floc forming device for filtering equipment (Korea)

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• Patent No. 10-1919566
  Filter plate and filter press including the same (Korea)

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• Patent No. 10-1916388
  Filtering equipment and moisture content monitoring method using the same (Korea)

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• Patent No. 10-1916387
  Sludge Filtration System (Korea)

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• Patent No. 10-1936416
  Flocculant injection device and sludge filtration system including the same (Korea)

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• Patent No. 10-2056349
  Membrane filter plate for filter press with improved durability and mechanical properties (Korea)

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• Patent No. 10-2068662
  Sludge treatment system and its treatment method (Korea)

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• Patent No. ZL02149402.9
  Spiral axial hot air dryer (China)

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• Patent No. ZL200610144802.5
  A filter plate for filter press, a filter cloth cleaner for cleaning the filter cloth of the above filter plate, and filter press containing the same (China)

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• Patent No. 3665782
  Spiral axial hot air dryer (Japan)

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• Patent I No. 260998
  Organic waste disposal device (Taiwan)

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• Patent I No. 293895
  A filter plate for filter press, a filter cloth cleaner for cleaning the filter cloth of the above filter plate, and filter press containing the same (Taiwan)

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• Patent I No. 295582
  A filter plate equipped with a filter cloth clean-out and a filter cake batch discharge type filter press with the above filter plate installed (Taiwan)