Patents by Inventor Christopher J. Urch

Christopher J. Urch 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).

  • Cyclopropane derivatives
    Patent number: 4973767
    Abstract: The invention provides a process for the preparation of a compound of the general formula (I): ##STR1## wherein X, Y and R.sup.1 to R.sup.7 are as defined. In the process, the olefinic analog of the compound of general formula (I) is treated with a halogen-bearing compound in the presence of metallic zinc.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: November 27, 1990
    Assignee: Sandoz Ltd.
    Inventors: Patrick J. Crowley, Christopher J. Urch, Paul A. Worthington