Patents by Inventor Jean P. Laugier

Jean P. Laugier 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).

  • Lipophilic quaternary ammonium salicylates, their use in cosmetics and in dermopharmacy
    Patent number: 5137923
    Abstract: Lipophilic quaternary ammonium salicylate, characterized in that it corresponds to the formula: ##STR1## in which: (i) R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be identical or different, denote an alkyl or alkylcycloalkyl radical, optionally substituted or interrupted;(ii) R.sub.3 and/or R.sub.4 denote(s) a group:R.sub.8 --OC.sub.2 H.sub.3 R.sub.7 ].sub.n [OCH.sub.2 CHOH--CH.sub.2 ].sub.pin which: 0.ltoreq.n.ltoreq.4 and p denotes 0 or 1; R.sub.8 denotes H or an alkyl, alkenyl, alkylcycloalkyl or alkylaryl radical;(iii) R.sub.4 denotes an alkylphenyl radical;(iv), (v) R.sub.1 and R.sub.2 can form a saturated or unsaturated aromatic or non-aromatic heterocycle;(vi) R.sub.1, R.sub.2 and R.sub.3 form polycyclic derivatives with the nitrogen atoms; R.sub.5 denotes a group corresponding to the formula: ##STR2## in which n is an integer varying between 0 and 10.
    Type: Grant
    Filed: June 21, 1990
    Date of Patent: August 11, 1992
    Assignee: L'Oreal
    Inventors: Michel Philippe, Henri Sebag, Michel Hocquaux, Bernard Jacquet, Jean P. Laugier
  • Benzoyl peroxide--quaternary ammonium lipophilic salicylate based pharmaceutical and cosmetic compositions and their use especially in treatment of acne
    Patent number: 5019567
    Abstract: A pharmaceutical or cosmetic composition for topical application comprises, in a physiologically acceptable support, the combination of benzoyl peroxide and at least one quaternary ammonium lipophilic salicylate having general formula (I): ##STR1## where: (i) R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be identical or different, representing a substituted or interrupted alkyl or cycloalkyl radical;(ii) R.sub.3 and/or R.sub.4 represent(s) the group:R.sub.8 --OC.sub.2 H.sub.3 R.sub.7 ].sub.n [OCH.sub.2 CHOH--CH.sub.2 ].sub.pwhere O.ltoreq.n.ltoreq.4 and p is 0 or 1; R.sub.8 represents H or an alkyl, alkenyl, alkylcycloalkyl or alkylanyl radical;(iii) R.sub.4 represents an alkylenephenyl radical;(iv), (v): R.sub.1 and R.sub.2 may form an aromatic or nonaromatic saturated or unsaturated heterocycle;(vi) R.sub.1, R.sub.2 and R.sub.3 together with nitrogen, may form polycyclic derivatives; and R.sub.5 represents a group having the formula: ##STR2## where n may vary from 0 to 10.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: May 28, 1991
    Assignee: L'Oreal
    Inventors: Michel Philippe, Michel Hocquaux, Henri Sebag, Irina Beck, Jean P. Laugier
  • Lipophilic quaternary ammonium salicylates, their use in cosmetics and in dermopharmacy
    Patent number: 5001156
    Abstract: Lipophilic quaternary ammonium salicylate, characterized in that it corresponds to the formula: ##STR1## in which: (i) R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be identical or different, denote an alkyl or alkylcycloalkyl radical, optionally substituted or interrupted;(ii) R.sub.3 and/or R.sub.4 denote(s) a group:R.sub.8 [OC.sub.2 H.sub.3 R.sub.7 ].sub.n [OCH.sub.2 CHOH--CH.sub.2 ].sub.pin which 0.ltoreq.n.ltoreq.4 and p denotes 0 or 1; R.sub.8 denotes H or an alkyl, alkenyl, alkylcycloalkyl or alkylaryl radical;(iii) R.sub.4 denotes an alkylphenyl radical;(iv), (v) R.sub.1 and R.sub.2 can form a saturated or unsaturated aromatic or non-aromatic heterocycle;(vi) R.sub.1, R.sub.2 and R.sub.3 form polycyclic derivatives with the nitrogen atoms; R.sub.5 denotes a group corresponding to the formula: ##STR2## in which n is an integer varying between 0 and 10.
    Type: Grant
    Filed: December 1, 1987
    Date of Patent: March 19, 1991
    Assignee: L'Oreal
    Inventors: Michel Philippe, Henri Sebag, Michel Hocquaux, Bernard Jacquet, Jean P. Laugier