Patents by Inventor Hans Erik Johansson-Vestin

Hans Erik Johansson-Vestin 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).

  • Silica-based sols
    Patent number: 8835515
    Abstract: An aqueous sol containing silica-based particles which sol has a specific surface area of at least 115 m2/g aqueous sol and a pH of at least 10.5, and an S-value within the range of from 10 to 45% and/or contains silica-based particles having a specific surface area of at least 550 and less than about 1200 m2/g SiO2, and wherein the sol is substantially free from aluminium.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: September 16, 2014
    Assignee: Akzo Nobel, N.V.
    Inventors: Michael Persson, Marek Tokarz, Maj-Lis Dahlgren, Hans Erik Johansson-Vestin