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Patents

Patents Number Patents Contents
10-1421194 Purification method of mixed organic electroluminescent material
10-1525814 Method for refining of organic electroluminescent material using the mixed absorbent
10-1403470 Method for refining of recovered organic electroluminescent material
10-1319822 Method for recycling recovered organic material,KR/CN
10-1289792 Purification method of organic electroluminescent material, KR/PCT/CN
10-1363241 Method for refining of high purity organic electroluminescent material
10-1403471 Recycling method for recovered doping materials
10-1268916 Method for recovering organic electroluminescent material, KR/PCT/CN
10-1937332 Purification method of Terephthalylidene dicamphor sulfonic acid