Patents by Inventor Tomas Weil

Tomas Weil 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 the manufacture of resorcinols
    Patent number: 4072660
    Abstract: Resorcinols are prepared by reacting 4-oxocarboxylic acid esters or .delta.-enollactones with a strong base in a glycol dialkyl ether as solvent and by subsequent dehydrogenating the acidified reaction product.
    Type: Grant
    Filed: July 28, 1976
    Date of Patent: February 7, 1978
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Werner H. Muller, Hansjorg Hey, Tomas Weil
  • Process for the manufacture of cyclohexandione-1,3
    Patent number: 4028417
    Abstract: Cyclohexanediones-1,3 are prepared in a good selectivity by reacting an .alpha.,.beta.-unsaturate carboxylic acid ester with a ketone in the liquid phase in the presence of a strong base and a solvent selected from the group consisting of carboxylic acid amides, phosphoric acid amides, sulfoxides, sulfones, and glycol dialkyl ethers.
    Type: Grant
    Filed: July 28, 1976
    Date of Patent: June 7, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Werner Heinrich Muller, Tomas Weil