Xiaoyaong Zhang

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Patents Grantslast 30 patents

Information Patent Grant
Method for making an optically active diphosphine ligand
- Patent number 5,922,918
- Issue date Jul 13, 1999
- Takasago International Corporation
- Xiaoyaong Zhang
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chiral diphosphine compound intermediate for preparing the same tra...
- Patent number 5,872,273
- Issue date Feb 16, 1999
- Takasago International Corporation
- Takao Saito
- C07 - ORGANIC CHEMISTRY