Patents by Inventor Frederick M. M. Hager

Frederick M. M. Hager 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).

  • Synthesis of intermediate for the manufacture of 5,6-dihydro-2-methyl-N-phenyl-1,4-oxathin-3-carboxamide
    Patent number: 4359579
    Abstract: 2-[(2-hydroxyethyl)thio]-3-oxo-N-phenylbutanamide, which is an intermediate useful in the manufacture of the fungicide, 5,6-dihydro-2-methyl-N-phenyl-1,4-oxathiin-3-carboxamide, is made by reaction of di-(2-hydroxyethyl) disulfide with acetoacetanilide in its ionized form.
    Type: Grant
    Filed: August 24, 1981
    Date of Patent: November 16, 1982
    Assignee: Uniroyal, Ltd.
    Inventors: George Liebermann, Frederick M. M. Hager