Patents by Inventor Gerard Land

Gerard Land 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).

  • Naphthalene derivatives having retinoid type action, the process for preparation thereof and medicinal and cosmetic compositions containing them
    Patent number: 4879284
    Abstract: The invention relates to a compound of formula: ##STR1## in which formula: R.sub.1 to R.sub.4 denote, independently, H, OH, C.sub.1 -C.sub.6 alkyl or C.sub.1 -C.sub.6 alkoxy; andA denotes --COR.sub.5, R.sub.5 being H when at least one of the substituents R.sub.1 to R.sub.4 is other than H; C.sub.1 -C.sub.6 alkyl; amino; (C.sub.1 -C.sub.6)alkylamino; di(C.sub.1 -C.sub.6) alkylamino; arylamino; benzylamino; amino drived from a cyclic or heterocyclic amine; (--COR.sub.5 being able, when it is an amide group, to be the amide group of an amino acid or of a glucosamine); or alternatively R.sub.5 denotes --OR.sub.6, R.sub.6 being H or (C.sub.1 -C.sub.6)alkyl; C.sub.1 -C.sub.6 mono- or polyhydroxyalkyl, or aryl or benzyl, both optionally substituted; --OR.sub.6 also being able to be derived from a sugar; and the salts and isomers of this compound. The invention also relates to a process for preparing this compound and medicinal and cosmetic compositions containing them.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: November 7, 1989
    Assignee: L'Oreal
    Inventors: Gerard Land, Jean Maignan, Serge Restle, Gerard Malle
  • Compositions containing bis-(quaternary ammonium) derivatives for the treatment of keratin materials and natural non-keratin or synthetic textile materials
    Patent number: 4828819
    Abstract: The composition of the invention comprises, in a medium suitable for the treatment of keratin materials, and natural non-keratin or synthetic textile materials, at least one bis-(quaternary ammonium) derivative having the formula: ##STR1## in which R.sub.1, R.sub.2, R.sub.4 and R.sub.5 are identical or different and denote lower alkyl or lower hydroxyalkyl radicals, R.sub.3 is an alkyl, cycloalkyl, alkenyl, hydroxyalkyl or optionally substituted aralkyl radical containing a maximum of 20 carbon atoms, A.sub.1 and A.sub.2, which are identical or different, represent optionally substituted alkylene or arylene radicals which can contain up to 20 carbon atoms, Z=--SO.sub.2 -- or --CO--.sub.p, in which p=1 or 2, R.sub.6 and R.sub.7, which are identical or different, are hydrogen atoms or lower alkyl radicals, or alternatively, if Z=--CO--.sub.p in which p=1, R.sub.6 and R.sub.7 can together form a group: ##STR2## R.sub.8 and R.sub.9 being hydrogen atoms or lower alkyl radicals, and X.sup..crclbar.
    Type: Grant
    Filed: June 16, 1988
    Date of Patent: May 9, 1989
    Assignee: L'Oreal
    Inventors: Gerard Land, Serge Forestier
  • Polyaspartic acid derivatives, their preparation and their use in cosmetic composition
    Patent number: 4363797
    Abstract: Novel polymers useful, in particular, in cosmetic compositions for application to the hair are described.
    Type: Grant
    Filed: December 6, 1979
    Date of Patent: December 14, 1982
    Assignee: Societe Anonyme dite: l'Oreal
    Inventors: Bernard Jacquet, Christos Papantoniou, Gerard Land, Serge Forestier