Patents by Inventor Walter John Cordes

Walter John Cordes 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).

  • Methyl isocyanate process
    Patent number: 4082787
    Abstract: Process for making methyl isocyanate comprising thermally dehydrochlorinating a solution of methyl carbamyl chloride in an aprotic nonpolar solvent, condensing the gases thereby formed at a temperature above the boiling point of methyl isocyanate so as to liquify at least part of said gases which are condensable at said temperature, removing HCl gas by condensing the remaining condensable gases at a temperature below the boiling point of methyl isocyanate, and separating methyl isocyanate from the condensate obtained in said first condensation step.
    Type: Grant
    Filed: January 3, 1977
    Date of Patent: April 4, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert James Bassett, Walter John Cordes, Julius Jakob Fuchs