Patents by Inventor Jörgen Abrahamsson

Jörgen Abrahamsson 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).

  • AGGLOMERATES OF PRECIPITATED SILICA, METHOD FOR THEIR PREPARATION AND THEIR USE AS FILTER MEDIUM FOR GAS FILTRATION
    Publication number: 20110000370
    Abstract: A micro-porous material having agglomerates of precipitated silica, according to the formula MeOx.HiSiO2, The agglomerates are composed of porous particles, and the agglomerates exhibit a size in the range 0.5-500 ?m. A gas filter having the micro-porous material, and a method of filtering air through the micro-porous material.
    Type: Application
    Filed: April 23, 2010
    Publication date: January 6, 2011
    Applicant: SVENSKA AEROGEL AB
    Inventors: Sven-Peter NORBERG, Jörgen Abrahamsson, Lars Gösta Lindahl
  • Agglomerates of precipitated silica, method for their preparation and their use as filter medium for gas filtration
    Patent number: 7736611
    Abstract: A method of producing a material including agglomerated particles of precipitated silica, including preparing a solution of at least two metal salts (Me), wherein the metal ions are divalent or polyvalent. A solution of alkali metal (M) silicate having a molar ratio SiO2/M2O of 1-4 is prepared. The solutions are mixed and the mixture stirred, allowing a coagulum to immediately form. The coagulum is rinsed, collected, dewatered, impregnated and processed to provide a material having a dry matter content of >75%, preferably >97%. A material obtainable by the process is also provided.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: June 15, 2010
    Assignee: Svenska Aerogel AB
    Inventors: Sven-Peter Norberg, Jörgen Abrahamsson, Lars Gösta Lindahl