Patents by Inventor George H. Quallich

George H. Quallich 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).

  • Process for preparing sertraline from chiral tetralone
    Patent number: 6593496
    Abstract: This invention relates to a novel improved process for preparing the (+) enantiomer of N-[4(3,4-dichlorophenyl)-3,4-dihydro-1(2H)-naphthalenylidene]methanamine by reacting the (+) enantiomer of 4-(3,4-dichlorophenyl)-3,4-dihydro-1(2H)-naphthalenone with monomethylamine and titanium chloride or molecular sieves.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: July 15, 2003
    Assignee: Pfizer Inc
    Inventor: George H. Quallich