Patents by Inventor Dmitri Ptchelintsev

Dmitri Ptchelintsev 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).

  • Oxa acids and related compounds for treating skin conditions
    Patent number: 5847003
    Abstract: Described are the use of compounds of Formula (I) depicted below, as active principals for treating skin conditions and compositions containing these compounds, ##STR1## where R.sub.4 is (CR.sub.5 R.sub.6 --CR.sub.7 R.sub.8 --X.sub.1).sub.n --CR.sub.9 R.sub.10 R.sub.11 ; n is an integer from 1 to 18; R.sub.1, R.sub.2, R.sub.3, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, R.sub.10 and R.sub.11 are, independently, hydrogen or substituents selected from alkyls, alkenyls, oxa-alkyls, aralkyls and aryls; and X, X.sub.1, Y and Z are, independently, oxygen.
    Type: Grant
    Filed: June 4, 1996
    Date of Patent: December 8, 1998
    Assignee: Avon Products, Inc.
    Inventors: Dmitri Ptchelintsev, Neil Scancarella, Robert Kalafsky
  • Oxa diacids and related compounds for treating skin conditions
    Patent number: 5834513
    Abstract: Described are the use of compounds of Formula (I), depicted below, as active principals for treating skin conditions, compositions containing these compounds, and methods of treating skin conditions using these compounds and compositions. ##STR1## wherein, R.sub.4 is (CR.sub.5 R.sub.6 --CR.sub.7 R.sub.8 --X.sub.1).sub.n --CR.sub.9 R.sub.10 --C(.dbd.X.sub.2)X.sub.3 R.sub.11, with n being an integer from 1 to 18; R.sub.1, R.sub.2, R.sub.3, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, R.sub.10 and R.sub.11 are independently, hydrogen or non-hydrogen substituents; and X, X.sub.1, X.sub.2, X.sub.3, Y and Z are independently, O, NH or S.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: November 10, 1998
    Assignee: Avon Products, Inc.
    Inventors: Dmitri Ptchelintsev, Neil Scancarella, Robert Kalafsky
  • Topical alkyl-2-O-L-ascorbyl-phosphates
    Patent number: 5780504
    Abstract: This disclosure relates to a method for topical use of a derivative of L-ascorbic acid which is stable, easily incorporated into cosmetically acceptable vehicles and enzymatically bioreversible in the skin to free ascorbic acid and a safe alkanol component. An exemplary embodiment uses the alkyl-2-O-L-ascorbyl-phosphate which is shown in Formula I.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: July 14, 1998
    Assignee: Avon Products, Inc.
    Inventor: Dmitri Ptchelintsev
  • N-acyl-ethylene triacetic composition for treating abnormal keratinization
    Patent number: 5728733
    Abstract: Disclosed is the novel use of N-acyl-N,N',N'-ethylene-diaminetriacetic acids and N-acyl-N,N',N'-(ethylenedioxy) diethylenedinitrilotriacetic acids as active ingredients in preventative as well as therapeutic topical compositions to promote exfoliation and alleviate symptoms of skin conditions caused by abnormal keratinization.
    Type: Grant
    Filed: December 10, 1996
    Date of Patent: March 17, 1998
    Assignee: Avon Products, Inc.
    Inventor: Dmitri Ptchelintsev
  • N-acyl-ethylene-triacetic acids
    Patent number: 5621008
    Abstract: Disclosed is the novel use of N-acyl-N,N',N'-ethylenediaminetriacetic acids and N-acyl-N,N',N'-(ethylenedioxy) diethylenedinitrilotriacetic acids as active ingredients in preventative as well as therapeutic topical compositions to promote exfoliation and alleviate symptoms of skin conditions caused by abnormal keratinization.
    Type: Grant
    Filed: October 27, 1995
    Date of Patent: April 15, 1997
    Assignee: Avon Products, Inc.
    Inventor: Dmitri Ptchelintsev
  • Topical alkyl-2-O-L-ascorbyl-phosphates
    Patent number: 5607968
    Abstract: This disclosure relates to a method for topical use of a derivative of L-ascorbic acid which is stable, easily incorporated into cosmetically acceptable vehicles and enzymatically bioreversible in the skin to free ascorbic acid and a safe alkanol component. An exemplary embodiment uses the alkyl-2-O-L-ascorbyl-phosphate which is shown in Formula I.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 4, 1997
    Assignee: Avon Products, Inc.
    Inventor: Dmitri Ptchelintsev