Patents by Inventor Frank Pflücker

Frank Pflücker 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).

  • Galenical formulation
    Patent number: 7345090
    Abstract: The invention relates to compounds of the formula I where R1, R2, R3, R4 and R5 have the meanings given in claim 1. The compound is suitable in particular for use in skin care compositions. They protect, firstly, against harmful oxidation reactions and, secondly, also act as UV filters.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: March 18, 2008
    Assignee: Merck Patent Gesellschaft mit Beschraenkter Haftung
    Inventors: Frank Pfluecker, Joachim Buenger, Hans-Juergen Driller, Herwig Buchholz, Ralf Rosskopf
  • Uv Filters
    Publication number: 20080038213
    Abstract: The invention relates to compounds of the formula (I) or (II), to compositions which comprise such compounds, to corresponding processes for the preparation of the compounds or the compositions comprising same, and to the use thereof as light-protection filters.
    Type: Application
    Filed: July 27, 2005
    Publication date: February 14, 2008
    Applicant: MERCK PATENT GMBH
    Inventors: Christophe Carola, Frank Pfluecker, Herwig Buchholz, Hansjurgen Driller, Hans Neunhoeffer, Evgeniy Blyumin
  • Sunscreen composition
    Patent number: 7264795
    Abstract: The present invention relates to a composition having UV protection properties, charaterized in that the formulation comprises at least one encapsulated organic sunscreen and does not penetrate the skin essentially.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: September 4, 2007
    Assignee: Merck Patent Gesellschaft
    Inventors: Frank Pflücker, Hans-Jürgen Driller, Laure Vouzellaud, Francois Marchio, Hervé Guinard, Ratan Chaudhuri
  • Tricyclic quinoxaline and quinoline derivatives as a UV filter
    Patent number: 7101537
    Abstract: The invention relates to the use of quinoxaline derivatives of formula I, represented by formulas 1a and 1b, as photostable UV filters, in particular in cosmetic and pharmaceutical preparations for protecting the human epidermis or human hair against UV radiation, above all in the 280–400 nm range.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: September 5, 2006
    Assignee: Merck Patentgesellschaft
    Inventors: Frank Pfluecker, Michael Schwarz, Volker Scholz, Hans Neunhoeffer
  • Silicon dioxide-coated nanoparticulate uv protectant
    Publication number: 20060194057
    Abstract: The invention relates to silicon dioxide-coated nanoparticulate UV protectants that are obtainable by hydrothermal treatment of a nanoparticulate metal oxide and subsequent application of a silicon dioxide coating. The invention also relates to the production and the use of said protectants and to other novel compositions especially for topical use that are especially destined for the protection of the skin and/or hair from UV radiation. The invention further relates to the cosmetic use of said protectants.
    Type: Application
    Filed: July 5, 2004
    Publication date: August 31, 2006
    Inventors: Frank Pfluecker, Bernd Hirthe, Heike Saenger, Stephan John
  • Formulation comprising benzofuranone derivatives for protection against oxidative stress
    Patent number: 6903134
    Abstract: The invention relates to a cosmetic or pharmaceutical formulation comprising at least one compound of formula (I). The cosmetics or pharmaceutical products are particularly suitable for the care of the skin in protecting against oxidative stress and ageing phenomena.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: June 7, 2005
    Assignee: Merck Patent GmbH
    Inventors: Frank Pflücker, Herwig Buchholz, Ralf Rosskopf, Joachim Bünger
  • Galenical formulation
    Publication number: 20040202624
    Abstract: The invention relates to compounds of the formula I 1
    Type: Application
    Filed: April 28, 2004
    Publication date: October 14, 2004
    Inventors: Frank Pfluecker, Joachim Buenger, Hans-Juergen Driller, Herwig Buchholz, Ralf Rosskopf
  • Conjugate, its preparation and use
    Patent number: 6685924
    Abstract: The invention relates to a conjugate which can be used for preparing dermatological and cosmetic compositions. The invention also relates to processes for preparing such conjugate and to its use.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: February 3, 2004
    Assignee: Merck Patent GmbH
    Inventors: Herwig Buchholz, Ralf Anselmann, Hansjuergen Driller, Michael Kirschbaum, Frank Pflücker
  • Conjugate, its preparation and use
    Patent number: 6673336
    Abstract: The invention relates to a conjugate which can be used for preparing dermatological and cosmetic compositions. The invention also relates to processes for preparing such conjugate and to its use.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: January 6, 2004
    Assignee: Merck Patent, GmbH
    Inventors: Herwig Buchholz, Eike Poetsch, Ralf Rosskopf, Ralf Anselmann, Michael Kirschbaum, Frank Pflücker
  • Process for the preparation of UV filter substances
    Patent number: 6593476
    Abstract: The present invention relates to a preparation process for 2-arylbenzimidazolesulfonic acids of the formula I: Ar is a substituted or unsubstituted phenyl or naphthyl radical and R is a C1-8-alkyl or C1-8-alkoxy radical. n is 1-4, m is 1-3 and o is 0-2. o-phenylenediamine is reacted in the presence of oleum with an arylcarboxylic acid or an arylcarboxylic acid derivative. Compounds prepared in this way can be used as UV filters, and as components in cosmetic compositions.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: July 15, 2003
    Assignee: Merck Patent Gesellschaft mit beschränkter Haftung
    Inventors: Ulrich Heywang, Michael Schwarz, Frank Pflücker
  • 2-phenyl-benzimidazolesulfonic acids as UV-B filters
    Patent number: 6440401
    Abstract: Disclosed is a 2-phenyl-benzimidazolesulfonic acid according to the formula in which n is 0, 1 or 2 and m is 2 or 3, R1, R2, R3, R4 and R5, are each a radical such as H, C1-8-alkyl, C1-8-alkoxy, hydroxyl, sulfate, nitro, F, Cl, Br or I radicals, and R6 is a C1-8-alkyl or C1-8-alkoxy radical. This compound can be effectively used as a UV filter, and as part of a cosmetic formulation which comprise these compounds. A process for preparation of the compound is disclosed as well.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: August 27, 2002
    Assignee: Merck Patent Gesellschaft Mit Beschraenkter Haftung
    Inventors: Ulrich Heywang, Michael Schwarz, Frank Pflücker
  • Galenical formulation
    Publication number: 20020106338
    Abstract: The invention relates to compounds of the formula I 1
    Type: Application
    Filed: November 14, 2001
    Publication date: August 8, 2002
    Inventors: Frank Pfluecker, Joachim Buenger, Hans-Juergen Driller, Herwig Buchholz, Ralf Rosskopf