Patents by Inventor Dirk Petersohn

Dirk Petersohn 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).

  • Publication number: 20080176811
    Abstract: Substituted and unsubstituted flavone or isoflavone glycoside derivatives of the formula [A1-C(?O)O]m—[X—O-Z]—[O—C(?O)-A2]n, wherein [X—O-Z] represents a flavone or isoflavone glycoside structure, particularly a naringin residue, X is a flavone or isoflavone corresponding to formula (IIa) or formula (IIb): wherein the flavone or isoflavone residue is substituted one or more times and/or reduced one or more times; Z represents a mono-, di- or polysaccharide, which is acetally-bound at the benzopyran group to X and ester-substituted by —O—C(?O)-A2; [A1-C(?O)] is an acyl group on the flavone or isoflavone; A1 and A2 independently, represent a polyunsaturated C15-26 alkenyl group containing at least four isolated and/or at least two conjugated double bonds, or an arylaliphatic radical with 1-to-4 methylene groups between the ester group and the aromatic ring; [C(?O)A2] is an acyl group; n is an integer other than 0; m is an integer, including 0; and R1, R2 and R are hydroxyl groups or hydrogen atoms.
    Type: Application
    Filed: March 28, 2008
    Publication date: July 24, 2008
    Inventors: Bernadette Geers, Ralf Otto, Albrecht Weiss, Dirk Petersohn, Klaus Rudolf Schroeder, Kordula Schlotmann
  • Publication number: 20080118458
    Abstract: Compositions, in particular, for the treatment of the hair or of the skin, comprising at least one compound which is selected from L-carnitine or L-carnitine derivatives and at least one further substance which is selected from the group formed from active ingredients obtainable from the plants of the genus Echinacea, and also taurine and derivatives thereof.
    Type: Application
    Filed: January 7, 2008
    Publication date: May 22, 2008
    Inventors: Melanie GIESEN, Klaus Rudolf SCHROEDER, Dirk PETERSOHN
  • Publication number: 20070020623
    Abstract: Described herein are processes and devices useful for the identification of genes differentially expressed in skin. Preferably, the processes and devices are useful for the in vitro determination of skin homeostasis. Also described is a combination having a plurality of genes differentially expressed in skin compared to other tissues. Biochips and test kits useful in processes for the identification of genes expressed in skin homeostasis as well as in processes for screening substances useful in maintaining or promoting homeostasis of the skin are also described. Also described are processes for identifying substances useful in maintaining or promoting homeostasis of the skin as well as processes for making cosmetic and/or pharmaceutical preparations comprising such substances.
    Type: Application
    Filed: December 20, 2001
    Publication date: January 25, 2007
    Inventors: Dirk Petersohn, Marcus Conradt, Kay Hoffmann
  • Publication number: 20060204992
    Abstract: The invention relates to a method for determining hair cycle markers in vitro, test kits and biochips which are used to determine hair cycle markers and to the use of proteins, mRNA molecules, proteins or fragments thereof as hair cycle markers. The invention also relates to a test method which is used to detect the effectiveness of cosmetic and pharmaceutical active ingredients which influence the hair cycle, in addition to a screening method which is used to identify cosmetic or pharmaceutical active ingredients which influence the hair cycle and to a method for the production of a cosmetic and pharmaceutical preparation which influences the hair cycle.
    Type: Application
    Filed: February 28, 2006
    Publication date: September 14, 2006
    Inventors: Olaf Holtkotter, Dirk Petersohn, Kordula Schlotmann, Melanie Giesen, Danlala Kessler-Becker
  • Publication number: 20060088852
    Abstract: The invention relates to a method for determining the homeostasis of hairy skin in vitro, to test kits and biochips for determining markers of hairy skin, in addition to the use of proteins, mRNA molecules or fragments thereof as markers of hairy skin. The invention also relates to a test method for detecting the effectiveness of cosmetic or pharmaceutical active substances for treating hairy skin in addition to a screening method for identifying cosmetic or pharmaceutical active substances for treating hairy skin and to a method for producing a cosmetic or pharmaceutical preparation for treating hairy skin.
    Type: Application
    Filed: June 20, 2005
    Publication date: April 27, 2006
    Inventors: Dirk Petersohn, Kordula Schlotmann, Thomas Gassenmeier, Olaf Holtkoetter, Marcus Conradt, Kay Hofmann
  • Publication number: 20050089512
    Abstract: The invention relates to a skin/hair equivalent, more particularly a hair model with reconstructed papillae (pseudopapillae; PP) in a reconstructed dermis (pseudodermis; PD), to its production and to its use, more particularly for medical/pharmaceutical purposes and for application in the cosmetics industry.
    Type: Application
    Filed: June 18, 2004
    Publication date: April 28, 2005
    Inventors: Kordula Schlotmann, Thomas Gassenmeier, Ralf Paus, Melanie Giesen, Dirk Petersohn
  • Publication number: 20050002894
    Abstract: Novel topical cosmetic and pharmaceutical compositions containing apple core extracts, and novel uses of apple core extracts in topical cosmetic or pharmaceutical compositions.
    Type: Application
    Filed: June 21, 2004
    Publication date: January 6, 2005
    Inventors: Dirk Petersohn, Kordula Schlotmann, Claudia Jassoy, Marianne Waldmann-Laue, Sevda Yuecel
  • Publication number: 20040142335
    Abstract: The invention relates to a method for determining skin stress and/or skin ageing in humans or animals in vitro, test kits and biochips for determining skin stress and/or skin ageing, and the use of proteins, mRNA molecules or fragments of proteins or mRNA molecules as skin stress and/or ageing markers. The invention also relates to a test method for demonstrating the effectiveness of cosmetic or pharmaceutical active ingredients against skin stress and/or skin ageing, a screening method for identifying cosmetic or pharmaceutical active ingredients against skin stress and/or skin ageing, and a method for producing a cosmetic and/or pharmaceutical preparation against skin stress and/or skin ageing. The invention further relates to a cosmetic or pharmaceutical preparation against skin stress and/or skin ageing.
    Type: Application
    Filed: September 17, 2003
    Publication date: July 22, 2004
    Inventors: Dirk Petersohn, Marcus Conradt, Kay Hofmann
  • Publication number: 20030223982
    Abstract: A method of using DNA repair enzymes in topical cosmetic or pharmaceutical compositions for the prevention of the ageing of human skin. In particular, the method prevents ageing effects caused by light. The method prevents the degradation of collagen within connective tissue, specifically within the dermis of the skin.
    Type: Application
    Filed: June 11, 2003
    Publication date: December 4, 2003
    Inventors: Kordula Schlotmann, Thomas Foerster, Dirk Petersohn, Marianne Waldmann-Laue
  • Publication number: 20030170186
    Abstract: The invention relates to flavone and isoflavone glycoside derivatives of general formula (I): [A1-C(═O)O]m—[X—O-Z]-[O—C(═O)-A2]n (I), wherein [X—O-Z] represents a flavone or isoflavone glycoside structure, wherein X represents a flavone or isoflavone parent substance of formula (IIa) or (IIb), said (iso)flavone parent substance being mono- or multisubstituted and/or mono- or multireduced (hydrogenated), wherein Z (sugar) represents a mono-, di- or polysaccharide which is acetally bonded to the radical X and is ester-substituted with A2 n-times, [A1-C(═O)] representing an acyl radical on the flavone or isoflavone parent substance, wherein A1 and A2, independently of each other, represent a polyunsaturated C15-C25-alkenyl radical with at least 4 isolated and/or at least 2 conjugated double bonds or an arylaliphatic radical with 1-4 methylene groups between the ester group and the aromatic ring, wherein [C(═O)A2&rs
    Type: Application
    Filed: April 24, 2003
    Publication date: September 11, 2003
    Inventors: Bernadette Geers, Ralf Otto, Albrecht Weiss, Dirk Petersohn, Klaus Rudolf Schroeder, Kordula Schlotmann