Patents by Inventor Leonid Metzger

Leonid Metzger 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).

  • Methods for the preparation of mirtazapine intermediates
    Patent number: 6774230
    Abstract: The preparation of 1-(3-carboxypyridyl-2)-4-methyl-2-phenylpiperazine dihydrate and other mirtazapine intermediates are described. These compounds are particularly useful in the preparation of mirtazapine.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: August 10, 2004
    Assignee: Teva Pharmaceutical Industries, Ltd.
    Inventors: Leonid Metzger, Shlomit Wizel
  • Methods for the preparation of mirtazapine intermediates
    Publication number: 20020165238
    Abstract: The preparation of 1-(3-carboxypyridyl-2)-4-methyl-2-phenylpiperazine dihydrate and other mirtazapine intermediates are described. These compounds are particularly useful in the preparation of mirtazapine.
    Type: Application
    Filed: February 14, 2002
    Publication date: November 7, 2002
    Inventors: Leonid Metzger, Shlomit Wizel