Patents by Inventor Markku Leivo

Markku Leivo 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).

  • METHOD FOR TREATING WASTE MATERIAL
    Publication number: 20220230771
    Abstract: The present invention relates to a method for treating waste material comprising organic components and low and/or medium level radioactive agents. The method comprises encapsulating the waste material into a matrix, gasifying the waste material at a temperature between 600 and 950° C. to form a gaseous fraction and a solid fraction comprising low and/or medium level radioactive agents and combustion residues of the organic components and encapsulating the solid fraction by a geopolymer matrix comprising metakaolin.
    Type: Application
    Filed: May 6, 2020
    Publication date: July 21, 2022
    Inventors: Tapio VEHMAS, Markku LEIVO, Matti NIEMINEN, Jaana LAATIKAINEN-LUNTAMA, Markus OLIN
  • A METHOD FOR TREATING WASTE MATERIAL COMPRISING ORGANIC COMPONENTS AND LOW AND/OR INTERMEDIATE LEVEL RADIOACTIVE AGENTS AND A USE OF A MATERIAL
    Publication number: 20220230772
    Abstract: The present invention relates to a method for treating waste material comprising organic components and low and/or intermediate level radioactive agents. The method comprises adding material comprising fibers and kaolin to the waste material in order to form a starting material, and gasifying the starting material at a temperature between 600 and 950° C. to form a gaseous fraction and a solid fraction comprising low and/or intermediate level radioactive agents, gasification residues of the organic components and metakaolin. The present invention also relates to a use of mate-rial comprising fibers and kaolin.
    Type: Application
    Filed: May 4, 2020
    Publication date: July 21, 2022
    Inventors: Matti NIEMINEN, Tapio VEHMAS, Markku LEIVO, Jaana LAATIKAINEN-LUNTAMA, Markus OLIN
  • Additive for cementitious materials
    Patent number: 9809496
    Abstract: The invention relates to use of nano-fibrillar cellulose as an gas-entrainment stabilizer, which when used in cementitious materials, provides improved gas pore structure quality and/or stability and/or robustness with regard to water content variation. The invention further relates to a method for stabilizing gasentrainment of cementitious materials and to a method for providing cementitious material with improved air pore structure quality and/or stability and/or robustness with regard to water content variation.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: November 7, 2017
    Assignee: UPM-KYMMENE CORPORATION
    Inventors: Hannele Kuosa, Anna Suurnakki, Antti Laukkanen, Jan-Erik Teirfolk, Markku Leivo
  • ADDITIVE FOR CEMENTITIOUS MATERIALS
    Publication number: 20160257614
    Abstract: The invention relates to use of nano-fibrillar cellulose as an gas-entrainment stabilizer, which when used in cementitious materials, provides improved gas pore structure quality and/or stability and/or robustness with regard to water content variation. The invention further relates to a method for stabilizing gasentrainment of cementitious materials and to a method for providing cementitious material with improved air pore structure quality and/or stability and/or robustness with regard to water content variation.
    Type: Application
    Filed: August 28, 2014
    Publication date: September 8, 2016
    Applicant: UPM-KYMMENE CORPORATION
    Inventors: Hannele Kuosa, Anna Suurnakki, Antti Laukkanen, Jan-Erik Teirfolk, Markku Leivo
  • Material to be used as a concrete additive
    Patent number: 9174873
    Abstract: The invention relates to an admixture for a cementitious composition comprising microfibrillar cellulose and/or a derivative thereof. The invention also relates to a method of manufacturing said admixture and to the use of the microfibrillar cellulose and/or a derivative thereof in the concrete admixture. The invention further relates to a cementitious composition comprising said admixture and methods of manufacture and use thereof.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: November 3, 2015
    Assignee: UPM-KYMMENE CORPORATION
    Inventors: Antti Laukkanen, Jan-Erik Teirfolk, Markku Leivo, Hannele Kuosa, Kirsi Kataja, Antti Nurmi
  • MATERIAL TO BE USED AS A CONCRETE ADDITIVE
    Publication number: 20120227633
    Abstract: The invention relates to an admixture for a cementitious composition comprising microfibrillar cellulose and/or a derivative thereof. The invention also relates to a method of manufacturing said admixture and to the use of the microfibrillar cellulose and/or a derivative thereof in the concrete admixture. The invention further relates to a cementitious composition comprising said admixture and methods of manufacture and use thereof.
    Type: Application
    Filed: October 1, 2010
    Publication date: September 13, 2012
    Applicant: UPM-KYMMENE CORPORATION
    Inventors: Antti Laukkanen, Jan-Erik Teirfolk, Markku Leivo, Hannele Kuosa, Kirsi Kataja, Antti Nurmi