Patents by Inventor Pekka Ahtila

Pekka Ahtila 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).

  • Patent number: 11931774
    Abstract: Disclosed is a method for treating wood veneer, including the steps of providing at least one sheet of wood veneer; coating at least one side of the sheet of wood veneer with an aqueous coating composition including nanocellulose to obtain a coated sheet of wood veneer; and drying the coated sheet using compression pressure and heat. Also disclosed is a coated wood veneer including a sheet of wood veneer and a coating including nanocellulose arranged on at least one surface of the sheet.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: March 19, 2024
    Assignees: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY, AALTO UNIVERSITY FOUNDATION SR
    Inventors: Jaakko Pere, Vesa Kunnari, Matti Kairi, Pekka Ahtila
  • Publication number: 20210039134
    Abstract: Disclosed is a method for treating wood veneer, including the steps of providing at least one sheet of wood veneer; coating at least one side of the sheet of wood veneer with an aqueous coating composition including nanocellulose to obtain a coated sheet of wood veneer; and drying the coated sheet using compression pressure and heat. Also disclosed is a coated wood veneer including a sheet of wood veneer and a coating including nanocellulose arranged on at least one surface of the sheet.
    Type: Application
    Filed: January 16, 2019
    Publication date: February 11, 2021
    Inventors: Jaakko PERE, Vesa KUNNARI, Matti KAIRI, Pekka AHTILA
  • Patent number: 10329505
    Abstract: The present invention relates to a method for manufacturing a biofuel from a vegetable-based biomaterial by performing the manufacture in an integrated manner, in such a way that the biomaterial is made finer and dried with the aid of heat brought from a heat-releasing process, when the drying is finally performed after the finer making stage, optionally in such a way that drying is started already in connection with finer making. The invention also relates to a biofuel manufactured in this manner and the use of the fuel in question.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: June 25, 2019
    Assignee: Aalto University Foundation sr
    Inventors: Pekka Ahtila, Esa Viljakainen
  • Publication number: 20160060557
    Abstract: The present invention relates to a method for manufacturing a biofuel from a vegetable-based biomaterial by performing the manufacture in an integrated manner, in such a way that the biomaterial is made finer and dried with the aid of heat brought from a heat-releasing process, when the drying is finally performed after the finer making stage, optionally in such a way that drying is started already in connection with finer making. The invention also relates to a biofuel manufactured in this manner and the use of the fuel in question.
    Type: Application
    Filed: April 8, 2014
    Publication date: March 3, 2016
    Inventors: Pekka Ahtila, Esa Viljakainen
  • Patent number: 6588349
    Abstract: System for drying a damp biofuel, includes a boiler (1) for combustion of the fuel. Further, the system includes a first heat drying chamber (2), a drying gas flow (3) heated by the thermal energy of the combustion gases from the boiler and/or by steam, the gas flow being passed into the first heat drying chamber, and a fuel supply (4) for passing the fuel into the first heat drying chamber. The system includes a second heat drying chamber (5), an intermediate heating unit (6) for heating the drying gas flow before the second heat drying chamber, an intermediate supply (7) for passing the fuel from the first heat drying chamber into the second heat drying chamber, a boiler supply (8) for passing the fuel from the final heat drying chamber into the boiler and an outlet (9) for passing the flow of drying gas from the final heat drying chamber into the boiler.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: July 8, 2003
    Inventors: Pekka Ahtila, Jukka-Pekka Spets
  • Patent number: 5709173
    Abstract: A method for controlling combustion air in a boiler plant, where combustion air is supplied into a boiler located in a boiler building, comprises the steps of determining a ratio of air flow inside the building to air flow outside the building on the basis of at least the temperature of the outside air and of a load of the boiler; taking a first air flow from inside of the building in accordance with the ratio; taking a second air flow from outside the building in accordance with the ratio; the second air flow being at a certain temperature; and supplying a combined combustion air flow including the first and second air flows, in accordance with the ratio, to the boiler. Also an apparatus is provided for controlling combustion in boiler building permitting it to achieve the above steps.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: January 20, 1998
    Assignee: Kvaerner Pulping Oy
    Inventors: Pekka Ahtila, Jaakko Haapio