Patents Represented by Attorney William Mitchell

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  • Uncatalyzed liquid phase fluorination of 1230ZA
    Patent number: 5877359
    Abstract: An uncatalyzed liquid phase process is provided for the preparation of oligomer free 1233zd via the fluorination of 1230za with a high molar excess of HF. The 1233zd is a known intermediate useful for preparing 245fa.
    Type: Grant
    Filed: January 27, 1998
    Date of Patent: March 2, 1999
    Assignee: Elf Atochem North America, Inc.
    Inventor: Maher Y. Elsheikh
  • Belt clip for tape ruler
    Patent number: D670586
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: November 13, 2012
    Inventor: Richard Fetterly