Patents by Inventor Wen Jing Quan

Wen Jing Quan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Lithium diisapropylamide
    Patent number: 5679850
    Abstract: Lithium diorganoamide compositions are prepared in ethers with an ether to diorganoamide mole ratio of from about 2.0 to about 5.0. These compositions have enough thermal stability generally due to the addition of stabilizers that the decomposition rate for lithium diorganoamide is less than 0.20% per day. Preferred stabilizers are LiBr, LiCl, LiI or Li-tert-butoxide, or combinations thereof. A preferred diorganoamide is lithium diisopropylamide.
    Type: Grant
    Filed: October 22, 1996
    Date of Patent: October 21, 1997
    Assignee: Cyprus Foote Mineral Company
    Inventors: Mark J. Hintze, Wen Jing Quan