Jian DU

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of xanthophyll crystals
- Patent number 8,034,983
- Issue date Oct 11, 2011
- Multi-Tech Specialty Chemicals, Co., Ltd.
- Jian Du
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Universal handle
- Patent number 4,940,230
- Issue date Jul 10, 1990
- Du Jian
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
PROCESS FOR THE PREPARATION OF XANTHOPHYLL CRYSTALS
- Publication number 20100137646
- Publication date Jun 3, 2010
- MULTI-TECH SPECIALTY CHEMICALS CO., LTD.
- Jian DU
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES