Patents by Inventor Bernard Lahourcade

Bernard Lahourcade 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 preparation of terpene-phenol resins by three-stage reaction of phenol with carene using Friedel-Crafts or Lewis acid catalyst
    Patent number: 4056513
    Abstract: This invention relates to a process for the preparation of improved terpene-phenol resins particularly useful in the field of adhesives, comprising:A. reacting 1 molar proportion of a phenol having at least 2 reactive sites with 0.4-0.6 molar proportion of a carene, in the presence of an acidic condensation catalyst;B. reacting the reaction product obtained in step (a) with 0.4-0.6 molar proportion of said carene in the presence of said catalyst, andC. subsequently reacting the material obtained in step (b) with a reactive terpene, the molar ratio between said reactive terpene and the amount of carene added in step (b) being comprised between 0.5 and 5.
    Type: Grant
    Filed: February 20, 1976
    Date of Patent: November 1, 1977
    Assignee: Les Derives Resiniques et Terpeniques
    Inventors: Bernard Lahourcade, Gustave Bonneau
  • Phenolic menthene derivatives, therapeutic composition containing same and their use as therapeutic compositions
    Patent number: 4054669
    Abstract: 1-Hydroxy-4-(3'-m.menthen-4'-yl)-benzene, 1-hydroxy-3-methyl-4-(3'-m.menthen-4'-yl)-6-isopropyl-benzene and their sulfonates have antiviral activity against influenza virus and antibacterial activity against gram-positive bacteria.
    Type: Grant
    Filed: January 2, 1976
    Date of Patent: October 18, 1977
    Assignees: Les Derives Resiniques et Terpeniques, S.A. Joullie International
    Inventors: Bernard Lahourcade, Christiane Hirigoyen, Maurice Joullie, Gabriel Maillard, Lucien Lakah, Christian Warolin