Patents by Inventor Sven Jaras

Sven Jaras 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).

  • Sintering resistant catalyst material and a method for the preparation thereof
    Patent number: 7285259
    Abstract: Preparation of sintering resistant hexaaluminates, AAl11O18, wherein A is an alka-line earth or rare earth metal, and more particularly lanthanum, by a combination of sol-gel and microemulsion techniques using a water soluble salt of A, and a method of forming spherical pellets thereof are disclosed.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: October 23, 2007
    Assignee: ECAPS
    Inventors: Kjell Anflo, Johan Agrell, Anders Ersson, Sven Järås, Magali Boutonnet, Jesper Brandt, Ola Lyckfeldt
  • Reactor for decomposition of ammonium dinitramide-based liquid monopropellants and process for the decomposition
    Patent number: 7137244
    Abstract: The present invention relates to a reactor for the decomposition of ammonium dinitramide-based liquid monopropellants into hot, combustible gases for combustion in a combustion chamber, and more particularly a rocket engine or thruster comprising such reactor and a combustion chamber. The invention also relates to a process for the decompostion of ammonium dinitramide-based liquid monopropellants.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: November 21, 2006
    Assignee: Svenska Rymdaktiebolaget
    Inventors: Tor-Arne Gronland, Bjorn Westerberg, Goran Bergman, Kjell Anflo, Jesper Brandt, Ola Lyckfeldt, Johan Agrell, Anders Ersson, Sven Jaras, Magali Boutonnet, Niklas Wingborg
  • Reactor for decomposition of ammonium dinitramide-baed liquid monopropellants and process for the decomposition
    Publication number: 20050014641
    Abstract: The present invention relates to a reactor for the decomposition of ammonium dinitramide-based liquid monopropellants into hot, combustible gases for combustion in a combustion chamber, and more particularly a rocket engine or thruster comprising such reactor and a combustion chamber. The invention also relates to a process for the decompostion of ammonium dinitramide-based liquid monopropellants.
    Type: Application
    Filed: May 23, 2002
    Publication date: January 20, 2005
    Inventors: Tor-Arne Gronland, Bjorn Westerberg, Goran Bergman, Kjell Anflo, Jesper Brandt, Ola Lyckfeldt, Johan Agrell, Anders Ersson, Sven Jaras, Magali Boutonnet, Niklas Wingborg
  • Sintering resistant catalyst material and a method for the preparation thereof
    Publication number: 20040208819
    Abstract: Preparation of sintering resistant hexaaluminates, AAl11O18, wherein A is an alka-line earth or rare earth metal, and more particularly lanthanum, by a combination of sol-gel and microemulsion techniques using a water soluble salt of A, and a method of forming spherical pellets thereof are disclosed.
    Type: Application
    Filed: June 1, 2004
    Publication date: October 21, 2004
    Inventors: Kjell Anflo, Johan Agrell, Anders Ersson, Sven Jaras, Magali Boutonnet, Jesper Brandt, Ola Lyckfeldt
  • Process for the preparation of an acid-resistant coating on filler particles
    Patent number: 5037477
    Abstract: The invention relates to a process for the preparation of an acid-resistant coating and calcium carbonate particles, in which process a slurry of calcium carbonate particles is mixed simultaneously with the solution of a zinc compound and a solution of a silica-containing substance at a temperature of 70.degree.-95.degree. C., the pH being maintained at 8-11.The invention also relates to calcium carbonate particles having an acid-resistant coating in accordance with the above-mentioned process.In addition, the invention relates to the use of calcium carbonate particles having a acid-resistant coating in accordance with the above-mentioned process, as an acid-resistant filler in the production of paper at pH 4.0-7.0.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: August 6, 1991
    Assignee: Eka Nobel AB
    Inventors: Marek Tokarz, Sven Jaras, Rein Sikkar
  • Process for the preparation of an acid-resistant coating on filler particles
    Patent number: 5000791
    Abstract: The invention relates to a process for the preparation of an acid-resistant coating and calcium carbonate particles, in which process a slurry of calcium carbonate particles is mixed simultaneously with the solution of a zinc compound and a solution of a silica-containing substance at a temperature of 70.degree.-95.degree. C., the pH being maintained at 8-11.The invention also relates to calcium carbonate particles having an acid-resistant coating in accordance with the above-mentioned process.In addition, the invention relates to the use of calcium carbonate particles having a acid-resistant coating in accordance with the above-mentioned process, as an acid-resistant filler in the production of paper at pH 4.0-7.0.
    Type: Grant
    Filed: July 20, 1989
    Date of Patent: March 19, 1991
    Assignee: Eka Nobel AB
    Inventors: Marek Tokarz, Sven Jaras, Rein Sikkar
  • Ceramic coating on metal
    Patent number: 4950627
    Abstract: The invention relates to a composition for forming a heat-insulating ceramic coating on a metal, said composition comprising, in % by weight:10-50% of potassium silicate10-50% of silica5-40% of inorganic filler1-25% of ceramic fibres2-40% of water2-20% of hollow microparticles0-5% of surface active agent.The invention also relates to a method for preparing a composition having the above-mentioned components.Furthermore, the invention relates to the use of the composition comprising the above-mentioned components, for application to internal combustion engine exhaust pipes.Finally, the invention relates to internal combustion engine exhaust pipes coated with layers of the above-mentioned composition.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: August 21, 1990
    Assignee: Eka Nobel AB
    Inventors: Bozena Tokarz, Bernt Larsson, Sven Jaras