Patents by Inventor Thomas H. Cour

Thomas H. Cour 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).

  • Process of preparing selective mixtures of piperazine and ethylenediamine
    Patent number: 4234730
    Abstract: Covers a process for preparing a mixture of piperazine and ethylenediamine by the hydrogenation reaction of monoethanolamine and ammonia utilizing a nickel-copper-chromium catalyst. The improvement of the invention involves predetermining the ratio of ethylenediamine to piperazine in the product mix by varying the hydrogen feed rate. Increasing said feed rate causes said ratio to decrease.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: November 18, 1980
    Assignee: Texaco Development Corp.
    Inventors: Thomas T. McConnell, Thomas H. Cour