Kefeng YANG

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Application of naphthenic imidazoline in inhibiting formation of na...
- Patent number 12,319,871
- Issue date Jun 3, 2025
- China Petroleum and Chemical Corporation
- Lihong Yang
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
APPLICATION OF NAPHTHENIC IMIDAZOLINE IN INHIBITING FORMATION OF NA...
- Publication number 20240376369
- Publication date Nov 14, 2024
- China Petroleum and Chemical Corporation
- Lihong YANG
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...