Patents by Inventor Duncan Mayes

Duncan Mayes 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: 11504877
    Abstract: The present invention relates to a process for preparing a modified wood product wherein the wood is treated with low-molecular weight resin based on lignin degradation products. The present invention also relates to a modified wood product produced using said process.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: November 22, 2022
    Assignee: Stora Enso OYJ
    Inventors: Marco Fleckenstein, Vladimirs Biziks, Holger Militz, Carsten Mai, Duncan Mayes, Janne Pynnönen
  • Patent number: 11370894
    Abstract: The present invention relates to a method of making a foamed cellulosic fiber-thermoplastic composite article. The method includes the steps of providing a copolymer composition, combining the copolymer composition and cellulosic fibers, applying heat, mixing energy and pressure to form a foamable mixture, and forming the foamable article in a molding or extruding operation. The method is characterized in that at least 10% of the cellulosic fibers have been thermally modified prior to being combined with the copolymer composition.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: June 28, 2022
    Assignees: Stora Enso OYJ, University of Maine System Board of Trustees
    Inventors: Duncan Mayes, Janne Pynnonen, Christopher H West, Douglas J Gardner, Yousoo Han
  • Patent number: 11267206
    Abstract: The present invention relates to an improved process for manufacturing an extruded composite product comprising natural fibers and a thermoplastic polymer. According to the present invention, mixing as well as crosslinking takes place inside an extruder. The natural fibers may be provided for example in the form of pulp or wood particles.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: March 8, 2022
    Assignee: Stora Enso OYJ
    Inventors: Duncan Mayes, Janne Pynnönen, Antti Korpela
  • Patent number: 11034838
    Abstract: The present invention is directed to a composite material comprising a cellulosic material, high impact polystyrene (HIPS) and styrene maleic anhydride (SMA). The cellulosic material may be thermally modified prior to being incorporated into the composite material. The present invention is also directed to a composite product that comprises the composite material according to the invention.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: June 15, 2021
    Assignees: Stora Enso OYJ, University of Maine System Board of Trustees
    Inventors: Duncan Mayes, Janne Pynnonen, Christopher H. West, Douglas J. Gardner, Yousoo Han
  • Publication number: 20210024706
    Abstract: The present invention is directed to a method for manufacturing a drylaid mat suitable for thermoforming. The present invention is directed to a dry forming process, wherein cellulosic or lignocellulosic fibers have been impregnated, but not cross linked, with a cross linking agent prior to forming in a dry forming method. The invention is also directed to dry-laid mats manufactured according to the method as well as to thermoformed products manufactured from such dry-laid mats.
    Type: Application
    Filed: April 3, 2019
    Publication date: January 28, 2021
    Applicant: Stora Enso OYJ
    Inventors: Duncan Mayes, Janne Pynnönen, Maria Törnblom
  • Publication number: 20210016466
    Abstract: The present invention relates to a process for preparing a modified wood product wherein the wood is treated with low-molecular weight resin based on lignin degradation products. The present invention also relates to a modified wood product produced using said process.
    Type: Application
    Filed: December 18, 2018
    Publication date: January 21, 2021
    Applicant: Stora Enso OYJ
    Inventors: Marco Fleckenstein, Vladimirs Biziks, Holger Militz, Carsten Mai, Duncan Mayes, Janne Pynnönen
  • Publication number: 20210016520
    Abstract: The present invention relates to an improved process for manufacturing an extruded composite product comprising natural fibers and a thermoplastic polymer. According to the present invention, mixing as well as crosslinking takes place inside an extruder. The natural fibers may be provided for example in the form of pulp or wood particles.
    Type: Application
    Filed: December 12, 2018
    Publication date: January 21, 2021
    Applicant: Stora Enso OYJ
    Inventors: Duncan Mayes, Janne Pynnönen, Antti Korpela
  • Publication number: 20200239690
    Abstract: The present invention is directed to a composite material comprising a cellulosic material, high impact polystyrene (HIPS) and styrene maleic anhydride (SMA). The cellulosic material may be thermally modified prior to being incorporated into the composite material. The present invention is also directed to a composite product that comprises the composite material according to the invention.
    Type: Application
    Filed: February 1, 2018
    Publication date: July 30, 2020
    Applicants: Stora Enso OYJ, University of Maine System Board of Trustees
    Inventors: Duncan Mayes, Janne Pynnonen, Christopher H. West, Douglas J. Gardner, Yousoo Han
  • Patent number: 10604656
    Abstract: The invention concerns an extruded composite containing wood fibre material and polymer. The wood fibre material is wood material where the knot or branch content is at least 10 w-%, or bark, or would material into which extract material obtained by extracting knots, branches or bark has been absorbed. The amount of the polymer is 5-25% from the weight of the composite. The composite has high hardness, and reduced moisture absorption and swelling properties. It can be used as constructional material.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: March 31, 2020
    Assignee: STORA ENSO OYJ
    Inventors: Janne Pynnönen, Matti Myyryläinen, Duncan Mayes, Jouko Silen
  • Patent number: 10577805
    Abstract: The present invention relates to a method for applying a wallpaper material onto a surface comprising the steps of providing a liquid suspension comprising cellulosic fibers wherein at least part of said cellulosic fibers comprises microfibrillated cellulose and wherein said liquid suspension has a dry content of at least 10% by weight, applying at least one layer of said liquid suspension onto the surface, drying said liquid suspension layer after it has been applied onto the surface, and thereby forming a dry fiber web layer, wherein said fiber web layer forms said wallpaper material.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: March 3, 2020
    Assignee: Stora Enso OYJ
    Inventors: Isto Heiskanen, Duncan Mayes, Simo Siitonen
  • Patent number: 10538065
    Abstract: The present invention relates to a composite product comprising a thermally modified solid wood component coated with a layer of a composite material which composite material comprises thermally modified cellulosic material and a polymer. The invention also relates to a process for producing said composite product.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: January 21, 2020
    Assignee: Stora Enso OYJ
    Inventors: Janne Pynnönen, Duncan Mayes
  • Publication number: 20190054650
    Abstract: The present invention relates to a process for preparing a modified wood product wherein a step of resin treatment is followed by a thermal modification step. The present invention also relates to a modified wood product produced using said process.
    Type: Application
    Filed: September 28, 2016
    Publication date: February 21, 2019
    Applicant: Stora Enso OYJ
    Inventors: Duncan Mayes, Janne Pynnönen, Reeta-Maria Stöd
  • Publication number: 20180265665
    Abstract: The present invention relates to a method of making a foamed cellulosic fiber-thermoplastic composite article. The method includes the steps of providing a copolymer composition, combining the copolymer composition and cellulosic fibers, applying heat, mixing energy and pressure to form a foamable mixture, and forming the foamable article in a molding or extruding operation. The method is characterized in that at least 10% of the cellulosic fibers have been thermally modified prior to being combined with the copolymer composition.
    Type: Application
    Filed: September 20, 2016
    Publication date: September 20, 2018
    Applicants: Stora Enso OYJ, University of Maine System Board of Trustees
    Inventors: Duncan Mayes, Janne Pynnonen, Christopher H West, Douglas J Gardner, Yousoo Han
  • Publication number: 20180111161
    Abstract: The present invention relates to a composite product comprising a thermally modified solid wood component coated with a layer of a composite material which composite material comprises thermally modified cellulosic material and a polymer. The invention also relates to a process for producing said composite product.
    Type: Application
    Filed: May 4, 2016
    Publication date: April 26, 2018
    Applicant: Stora Enso OYJ
    Inventors: Janne Pynnönen, Duncan Mayes
  • Publication number: 20170350135
    Abstract: The present invention relates to a method for applying a wallpaper material onto a surface comprising the steps of providing a liquid suspension comprising cellulosic fibers wherein at least part of said cellulosic fibers comprises microfibrillated cellulose and wherein said liquid suspension has a dry content of at least 10% by weight, applying at least one layer of said liquid suspension onto the surface, drying said liquid suspension layer after it has been applied onto the surface, and thereby forming a dry fiber web layer, wherein said fiber web layer forms said wallpaper material.
    Type: Application
    Filed: December 14, 2015
    Publication date: December 7, 2017
    Inventors: Isto Heiskanen, Duncan Mayes, Simo Siitonen
  • Publication number: 20130291763
    Abstract: The invention concerns an extruded composite containing wood fibre material and polymer. The wood fibre material is wood material where the knot or branch content is at least 10 w-%, or bark, or would material into which extract material obtained by extracting knots, branches or bark has been absorbed. The amount of the polymer is 5-25% from the weight of the composite. The composite has high hardness, and reduced moisture absorption and swelling properties. It can be used as constructional material.
    Type: Application
    Filed: September 19, 2011
    Publication date: November 7, 2013
    Applicant: STORA ENSO WOOD PRODUCTS OY LTD
    Inventors: Janne Pynnönen, Matti Myyryläinen, Duncan Mayes, Jouko Silen