Patents by Inventor Mitchell Joseph Bogdanowicz, Jr.

Mitchell Joseph Bogdanowicz, 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).

  • Method of making 4-amino-6-t-butyl-3-mercapto-1,2,4-triazin-5-one
    Patent number: 4013649
    Abstract: Method of making 4-amino-6-t-butyl-3-mercapto-1,2,4-triazin-5-one comprising halogenating a 3,3-dimethylbutyric acid with Br.sub.2 or Cl.sub.2 to produce a 2,2-dihalo-3,3-dimethylbutyric acid then reacting the latter with thiocarbohydrazide. Alternatively, a 3,3-dimethylbutyryl chloride can be used as starting material, in which case the halogenation product is contacted with water, an aqueous base, an alcohol, a mercaptan, or an amine to convert it to an acid or salt thereof, anhydride, ester, thioester or amide, and the latter is reacted with thiocarbohydrazide.
    Type: Grant
    Filed: October 11, 1974
    Date of Patent: March 22, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mitchell Joseph Bogdanowicz, Jr.