Patents by Inventor Stephan John

Stephan John 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).

  • TITANIUM DIOXIDE
    Publication number: 20210015726
    Abstract: A cosmetic composition includes from 0.1 wt % to 20 wt % of an organic cosmetic active ingredient which has ligand characteristics, from 0.1 wt % to 30 wt % of a titanium dioxide particulate material, and a cosmetically acceptable carrier. The titanium dioxide of the titanium dioxide particular matter is in the rutile form and has a geometric weight mean crystal size of from 0.35 ?m to 5 ?m. The particles of the titanium dioxide have a silica coating.
    Type: Application
    Filed: March 21, 2019
    Publication date: January 21, 2021
    Applicant: VENATOR GERMANY GMBH
    Inventors: STEPHAN JOHN, ESA LATVA-NIRVA, JOHN ROBB
  • Metal oxide particles aftertreated with organic phosphorus compounds
    Patent number: 9309272
    Abstract: The invention relates to metal oxide particles and/or metal hydroxide particles, aftertreated with an organic phosphorus compound, process for the preparation thereof, and compositions comprising same.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: April 12, 2016
    Assignees: MERCK PATENT GMBH, SACHTLEBEN CHEMIE GMBH
    Inventors: Joern Beck, Ruediger Graf, Frank Pfluecker, Gabriele Benkner, Bernd Hirthe, Stephan John
  • METAL OXIDE PARTICLES AFTERTREATED WITH ORGANIC PHOSPHORUS COMPOUNDS
    Publication number: 20150010602
    Abstract: The invention relates to metal oxide particles and/or metal hydroxide particles, aftertreated with an organic phosphorus compound, process for the preparation thereof, and compositions comprising same.
    Type: Application
    Filed: September 12, 2014
    Publication date: January 8, 2015
    Applicants: MERCK PATENT GMBH, SACHTLEBEN CHEMIE GMBH
    Inventors: Joern BECK, Ruediger GRAF, Frank PFLUECKER, Gabriele BENKNER, Bernd HIRTHE, Stephan JOHN
  • Metal oxide particles aftertreated with organic phosphorus compounds
    Patent number: 8883215
    Abstract: The invention relates to metal oxide particles and/or metal hydroxide particles, aftertreated with an organic phosphorus compound, process for the preparation thereof, and compositions comprising same.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: November 11, 2014
    Assignees: Merck Patent GmbH, Sachtleben Chemie GmbH
    Inventors: Joern Beck, Ruediger Graf, Frank Pfluecker, Gabriele Benkner, Bernd Hirthe, Stephan John
  • Nanoparticulate UV protectant with silicon dioxide coating
    Patent number: 8758501
    Abstract: The present invention relates to nanoparticulate UV protectants which are obtainable by hydrothermal treatment of a nanoparticulate metal oxide and subsequent application of a silicon dioxide coating, and to the preparation and use thereof. The present invention furthermore relates to novel compositions, in particular for topical application, which are intended, in particular, for light protection of the skin and/or of the hair against UV radiation, and to the use thereof in the above-mentioned cosmetic application.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: June 24, 2014
    Assignees: Merck Patent GmbH, Sachtleben Chemie GmbH
    Inventors: Frank Pfluecker, Bernd Hirthe, Heike Saenger, Stephan John
  • METAL OXIDE PARTICLES AFTERTREATED WITH ORGANIC PHOSPHORUS COMPOUNDS
    Publication number: 20130011350
    Abstract: The invention relates to metal oxide particles and/or metal hydroxide particles, aftertreated with an organic phosphorus compound, process for the preparation thereof, and compositions comprising same.
    Type: Application
    Filed: February 28, 2011
    Publication date: January 10, 2013
    Applicants: SACHTLEBEN CHEMIE GMBH, MERCK PATENT GMBH
    Inventors: Joern Beck, Ruediger Graf, Frank Pfluecker, Gabriele Benkner, Bernd Hirthe, Stephan John
  • Nanoparticulate UV Protectant With Silicon Dioxide Coating
    Publication number: 20090220441
    Abstract: The present invention relates to nanoparticulate UV protectants which are obtainable by hydrothermal treatment of a nanoparticulate metal oxide and subsequent application of a silicon dioxide coating, and to the preparation and use thereof. The present invention furthermore relates to novel compositions, in particular for topical application, which are intended, in particular, for light protection of the skin and/or of the hair against UV radiation, and to the use thereof in the above-mentioned cosmetic application.
    Type: Application
    Filed: April 30, 2009
    Publication date: September 3, 2009
    Inventors: Frank PFLUECKER, Bernd Hirthe, Heike Saenger, Stephan John
  • 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