Han-chul Song

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Kwangyokshi, KR

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Patents Grantslast 30 patents

Information Patent Grant
Water soluble azo dyes and their synthesis and use
- Patent number 6,046,312
- Issue date Apr 4, 2000
- Dongil Technology Ltd.
- Han-chul Song
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...