Patents by Inventor Ivan Maxwell Robinson

Ivan Maxwell Robinson 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 for making tetrahydrofurans
    Patent number: 4002646
    Abstract: Tetrahydrofurans are produced by (a) contacting gamma-chloroalkanols with an aqueous protonic solution by which the chloroalkanol is cyclized to form a tetrahydrofuran and (b) removing the resultant tetrahydrofuran from the reaction mixture. The gamma-chloroalkanol is preferably derived by free radical chlorination of alkanols in the presence of 50-96% wt. sulfuric acid.
    Type: Grant
    Filed: July 17, 1975
    Date of Patent: January 11, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ivan Maxwell Robinson