Patents by Inventor Georges Thiault

Georges Thiault 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 for preparing thienylacetic acids
    Patent number: 4180510
    Abstract: A method for preparing thienylacetic acid and its derivatives is disclosed, wherein a glyoxylic ester is made to react with hydrazine, and after with potash. Advantageously, the glyoxylic ester is prepared by condensation of a monoester monochloride of oxalic acid upon a thiophenic derivative, in the presence of titanium chloride.The so obtained products are useful as organic synthesis intermediaries for various products of pharmaceutical type.
    Type: Grant
    Filed: January 12, 1978
    Date of Patent: December 25, 1979
    Assignee: Produits Chimiques Auxiliaires et de Synthese, P.C.A.S.
    Inventors: Yves Le Guen, Georges Thiault