Patents by Inventor Marc Enslen

Marc Enslen 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 di- and tri-substituted xanthine compounds
    Patent number: 4581451
    Abstract: The invention relates to xanthines corresponding to the formula ##STR1## and physiologically acceptable salts thereof, in which R.sub.1 represents C.sub.2 -C.sub.4 -alkyl, C.sub.3 -C.sub.4 -isoalkyl, CH.sub.2 -(C.sub.2 -C.sub.3 -alkenyl) or CH.sub.2 -(C.sub.3 -isoalkenyl);R.sub.3 represents C.sub.3 -C.sub.5 -alkyl, C.sub.3 -C.sub.5 -isoalkyl, CH.sub.2 -(C.sub.2 -C.sub.4 -alkenyl) or CH.sub.2 -(C.sub.3 -C.sub.4 -isoalkenyl);R.sub.8 represents H, methyl or ethyl; with the proviso that(1) when R.sub.8 represents H, R.sub.1 is allyl and(2) R.sub.1 and R.sub.3 cannot both represent butyl or allyl at the same time.The compounds show non-specific or anxiolytic sedative activity.
    Type: Grant
    Filed: June 8, 1984
    Date of Patent: April 8, 1986
    Assignee: Nestec S.A.
    Inventors: Georges Philippossian, Marc Enslen
  • Di- or trisubstituted xanthines with neuroleptic properties and composition
    Patent number: 4469698
    Abstract: The invention relates to xanthines corresponding to the formula ##STR1## and physiologically acceptable salts thereof, in which R.sub.1 represents C.sub.2 -C.sub.4 -alkyl, C.sub.3 -C.sub.4 -isoalkyl, CH.sub.2 -(C.sub.2 -C.sub.3 -alkenyl) or CH.sub.2 -(C.sub.3 -isoalkenyl);R.sub.3 represents C.sub.3 -C.sub.5 -alkyl, C.sub.3 -C.sub.5 -isoalkyl, CH.sub.2 -(C.sub.2 -C.sub.4 -alkenyl) or CH.sub.2 -(C.sub.3 -C.sub.4 -isoalkenyl);R.sub.8 represents H, methyl or ethyl;with the proviso that(1) when R.sub.8 represents H, R.sub.1 is allyl and(2) R.sub.1 and R.sub.3 cannot both represent butyl or allyl at the same time.The compounds show non-specific or anxiolytic sedative activity.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: September 4, 1984
    Assignee: Societe d'Assistance Technique pour Produits Nestle S.A.
    Inventors: Georges Philippossian, Marc Enslen
  • 1-Isopropyl- and 1-isobutyl-3,7-dimethyl xanthine as medicaments
    Patent number: 4299833
    Abstract: The invention relates to 1-isopropyl- and 1-isobutyl-3,7-dimethyl xanthines as medicaments. They have a sedative effect comparable with that of a standard neuroleptic.
    Type: Grant
    Filed: May 8, 1980
    Date of Patent: November 10, 1981
    Assignee: Societe d'Assistance Technique Pour Produits Nestle S.A.
    Inventors: Georges Philippossian, Marc Enslen