Patents by Inventor Lucien Eric

Lucien Eric 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).

  • Preparation of sulfonylureas
    Patent number: 4062889
    Abstract: Sulfonylureas are prepared by reacting a hydroxyethyl carbamate with an alkali metal salt of a substituted benzene sulfonamide, the alkali metal being selected from the group comprising sodium, potassium and lithium.
    Type: Grant
    Filed: May 17, 1971
    Date of Patent: December 13, 1977
    Inventors: Lucien Eric, Francis L. Chubb
  • Process for preparing p-(5-chloro-2-methoxy-benzamidoethyl)-benzene sulfonamide
    Patent number: 3965173
    Abstract: A process for preparing p-[5-chloro-2-methoxy-benzamidoethyl]-benzene sulfonamide consisting of treating 5-chlorosalicylic acid or its ester by methylating and aminolysis to form N-phenethyl-5-chloro-2-methoxybenzamide followed by chlorosulfonation and aminolysis.
    Type: Grant
    Filed: May 21, 1971
    Date of Patent: June 22, 1976
    Inventors: Francis L. Chubb, Lucien Eric