Patents by Inventor Kevin P. Darst

Kevin P. Darst 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).

  • Preparation of a 2,3-dihaloperfluorocarbonyl halide
    Patent number: 5557010
    Abstract: Process for preparing a 2,3-dihaloperfluoropropionyl halide wherein an alkali metal chloride, bromide or iodide is contacted with a 3-haloperfluoropropene oxide in admixture in an inert liquid reaction medium.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: September 17, 1996
    Assignee: The Dow Chemical Company
    Inventors: Kevin P. Darst, Bobby R. Ezzell, Nobuyuki Ishibe
  • Process for preparation of haloginated esters
    Patent number: 5235094
    Abstract: A halogenated ester is prepared by addition of a halogenated nucleophile to a diester at a temperature less than 15.degree. C. but greater than -25.degree. C.
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: August 10, 1993
    Assignee: The Dow Chemical Company
    Inventors: Kevin P. Darst, Marius W. Sorenson