Patents by Inventor Donald A. Melchert, Jr.

Donald A. Melchert, Jr. 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).

  • Dichlorobutene isomerization process
    Patent number: 4827059
    Abstract: Formation of solid and/or high boiling residues during the isomerization of one of 1,4-dichlorobutene-2 and 3,4-dichlorobutene-1 into each other in the presence of a cuprous chloride catalyst is inhibited by the addition to the isomerization reaction of a small amount of a hydroxylamine salt.
    Type: Grant
    Filed: July 8, 1988
    Date of Patent: May 2, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Alexander T. Harris, Donald A. Melchert, Jr.