Patents by Inventor Esa Latva-Nirva

Esa Latva-Nirva 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: 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
  • Patent number: 8182602
    Abstract: The invention relates to a method of preparing a well-dispersable, rutile-structured, microcrystalline titanium dioxide product, a product prepared by the method, and an effect paint and a lacquer provided by means of the product. In the method, the titanium dioxide starting material is first treated with a base to have an alkaline pH value, after which it is treated with an acid to have a hydrochloric acid content of 8 to 30 g/l, neutralized, processed, and calcinated. In particular, the preparation method is characterized by the use of a pretreatment chemical before the calcination stage to improve the dispersability.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: May 22, 2012
    Assignee: Sachtleben Pigments Oy
    Inventors: Ralf-Johan Lamminmäki, Esa Latva-Nirva, Riitta Linho, Johanna Niinimäki, Visa Vehmanen
  • Publication number: 20110192322
    Abstract: The invention relates to a method of preparing a well-dispersable, rutile-structured, microcrystalline titanium dioxide product, a product prepared by the method, and an effect paint and a lacquer provided by means of the product. In the method, the titanium dioxide starting material is first treated with a base to have an alkaline pH value, after which it is treated with an acid to have a hydrochloric acid content of 8 to 30 g/l, neutralized, processed, and calcinated. In particular, the preparation method is characterized by the use of a pretreatment chemical before the calcination stage to improve the dispersability.
    Type: Application
    Filed: August 15, 2008
    Publication date: August 11, 2011
    Inventors: Ralf-Johan Lamminmäki, Esa Latva-Nirva, Riitta Linho, Johanna Niinimäki, Visa Vehmanen