Patents by Inventor Dorothee Wille

Dorothee Wille 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).

  • Stable cosmetic formulation containing butylmethoxydibenzoylmethane
    Patent number: 6491930
    Abstract: The invention relates e.g. to the use of aldehydes and/or ketones for improving the stability of cosmetic formulations containing butylmethoxydibenzoylmethane as organic light protection filters in conjunction with inorganic light protection filters.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: December 10, 2002
    Assignee: Merck Patent Gesellschaft MIT
    Inventors: Thekla Kurz, HansJürgen Driller, Sabine Hitzel, Dorothee Wille
  • STABLE COSMETIC FORMULATION CONTAINING BUTYLMETHOXYDIBENZOYLMETHANE
    Publication number: 20020150599
    Abstract: The invention relates e.g. to the use of aldehydes and/or ketones for improving the stability of cosmetic formulations containing butylmethoxydibenzoylmethane as organic light protection filters in conjunction with inorganic light protection filters.
    Type: Application
    Filed: May 5, 2000
    Publication date: October 17, 2002
    Inventors: THEKLA KURZ, HANSJURGEN DRILLER, SABINE HITZEL, DOROTHEE WILLE
  • Light-stable cosmetic formulation containing butylmethoxydibenzoylmethane
    Patent number: 6436374
    Abstract: A cosmetic preparation having butylmethoxydibenzoyhmethane as a protection filter and insoluble inorganic particles which are titanium dioxide particles doped with cerium or iron ions which absorb in the UVA region and are added to improve the photostability of the cosmetic preparation.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: August 20, 2002
    Assignee: Merck Patent Gesellschaft mit beschraenkter Haftung
    Inventors: Thekla Kurz, Dorothee Wille, Sabine Hitzel
  • Stable aqueous formulation of 3-(N-butylacetamino)-propionic acid ethyl ester
    Patent number: 6306905
    Abstract: The present invention relates to stable aqueous formulations of the insect repellent ethyl 3-(N-butyl-acetamino)propionate.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: October 23, 2001
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Thekla Kurz, Sabine Hitzel, Dorothee Wille, Mohammad Jalalian
  • Sunscreens having ultraspectral protection
    Patent number: 6187298
    Abstract: The invention relates to novel light protection filters for the VIS and IR region for the preparation of sunscreens and also to the use thereof in cosmetics. The invention further relates to sunscreens which have broad-band or ultraspectral protection.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: February 13, 2001
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Thekla Kurz, Sabine Hitzel, Dorothee Wille
  • Dispersion of inorganic UV filters
    Patent number: 6146617
    Abstract: The present invention relates to a dispersion of inorganic UV filters in liquid UV filters and their use in sunscreens.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: November 14, 2000
    Assignee: Merck Patent Gesellschaft mit
    Inventors: Thekla Kurz, Dorothee Wille, Sabine Hitzel