Patents Assigned to CELLUTECH AB
  • Patent number: 11602872
    Abstract: A transparent wood comprising at least one polymer and a wood substrate comprising more than 15% lignin, measured as Klason lignin, and having an optical transmittance of at least 60%, as well as a method for its preparation.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: March 14, 2023
    Assignee: Cellutech AB
    Inventors: Yuanyuan Li, Ramiro Rojas, Lars Berglund
  • Patent number: 11091877
    Abstract: The present invention relates to cellular solid materials comprising cellulose nanofibers (CNF) and an anionic or non-ionic surfactant, a method for preparation of such materials, as well as their use.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: August 17, 2021
    Assignee: Cellutech AB
    Inventors: Erik Johansson, Nicholas Tchang Cervin, Korneliya Gordeyeva, Lennart Bergstrom, Lars-Erik Wagberg
  • Patent number: 10907020
    Abstract: The present invention relates to cellular solid materials comprising cellulose nanofibers (CNF) and an anionic surfactant, a method for preparation of such materials, as well as their use.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: February 2, 2021
    Assignee: Cellutech AB
    Inventors: Erik Johansson, Nicholas Tchang Cervin, Lars-Erik Wagberg
  • Patent number: 10099192
    Abstract: The present invention relates to a method for the preparation of polymer shells, preferably composed of cellulose or hemicellulose, comprising the steps of dissolving the polymer component in a first solvent, preferably an organic solvent and precipitating the polymer component by contacting the first solution with a second solvent, which second solvent has a polar character, and in which second solvent the polymer component is essentially insoluble, thereby obtaining polymer shells. Moreover, the invention refers to the polymer shells as such, having permeable and responsive properties, as well as various applications comprising such polymer shells within the fields of drug delivery, separation techniques, and inter alia filling material.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: October 16, 2018
    Assignee: Cellutech AB
    Inventors: Christopher Carrick, Bert Pettersson, Lars Wågberg, Marcus Ruda
  • Patent number: 10035890
    Abstract: The present invention relates to films comprising a xyloglucan comprising not more than 11 mol % galactose residues, as well as a method for making such films, and its use as an oxygen barrier.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: July 31, 2018
    Assignee: Cellutech AB
    Inventors: Jose Joby Kochumalayil, Lars Berglund
  • Patent number: 9767944
    Abstract: The present invention relates to cellulose nanofibrils decorated with magnetic nanoparticles as well as a method for the preparation thereof and a material comprising the nanofibrils.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: September 19, 2017
    Assignee: CELLUTECH AB
    Inventors: Sylvain Galland, Richard T. Olsson, Lars Berglund
  • Patent number: 9700915
    Abstract: The present invention provides a method for the production of a superhydrophobic film, surface or material comprising the steps of: (i) providing a composition comprising a hydrophobic substance and a hydrophilic solvent, the hydrophilic solvent being a liquid at a temperature of 25° C. and atmospheric pressure; and (ii) spraying the composition towards a substrate for deposition of a solid residue onto the surface of the substrate for generation of the superhydrophobic film, surface or material; wherein the temperature of the composition is higher that the temperature of the substrate when carrying out step (ii). A composition, use of the composition and a substrate is also provided.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: July 11, 2017
    Assignee: CELLUTECH AB
    Inventor: Marcus Ruda
  • Patent number: 9556325
    Abstract: A hydrophobized nanofibrillated cellulose foam comprising a charged hydrophobic amine, a method for providing such foam and its use.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: January 31, 2017
    Assignee: Cellutech AB
    Inventors: Nicholas Tchang Cervin, Lennart Bergström, Lars-Erik Wågberg
  • Publication number: 20150357099
    Abstract: The present invention relates to cellulose nanofibrils decorated with magnetic nanoparticles as well as a method for the preparation thereof and a material comprising the nanofibrils.
    Type: Application
    Filed: February 11, 2013
    Publication date: December 10, 2015
    Applicant: CELLUTECH AB
    Inventors: Sylvain GALLAND, Richard T. OLSSON, Lars BERGLUND
  • Patent number: 9133578
    Abstract: The present invention relates to a polymer made of a primary amine functionalized polymer and a hemicellulose e.g. chitosan and xyloglucan, wherein the primary amine functionalized polymer is covalently bound to the hemicellulose, and to a cross-linking agent composition comprising the polymer. A method wherein manufacturing a cellulose containing product comprises the steps of; providing a cellulose containing product; treating said cellulose product with a cellulose adsorbing agent comprising a polymer made of a primary amine functionalized polymer and a hemicellulose e.g. chitosan and xyloglucan, and optionally other additives is also provided.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: September 15, 2015
    Assignee: CELLUTECH AB
    Inventors: Marcus Ruda, Rikard Slätteg{dot over (a)}rd
  • Publication number: 20150158995
    Abstract: A hydrophobized nanofibrillated cellulose foam comprising a charged hydrophobic amine, a method for providing such foam and its use.
    Type: Application
    Filed: July 10, 2013
    Publication date: June 11, 2015
    Applicant: Cellutech AB
    Inventors: Nicholas Tchang Cervin, Lennart Bergström, Lars-Erik Wågberg
  • Patent number: 8785623
    Abstract: The present invention relates to ferromagnetic materials based on nano-sized bacterial cellulose templates. More specifically, the present invention provides an agglomerate free magnetic nanoparticle cellulose material and a method of forming such magnetic nanoparticle cellulose material. Further, the magnetic nonoparticles are physically attached on the cellulose material and evenly distribute.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: July 22, 2014
    Assignee: Cellutech AB
    Inventors: Richard T. Olsson, My Ahmed Said Samir Azizi, Lars Berglund, Ulf W. Gedde
  • Patent number: 8722143
    Abstract: The present invention refers to a method for preparing a superhydrophobic surface on a solid substrate comprising the steps of (a) providing a solvent in the form of a pressurized fluid in a vessel, wherein the fluid exhibits a decrease in solvency power with decreasing pressure; (b) adding a hydrophobic substance to the solvent as a solute, which substance is soluble with the pressurized fluid and has the ability to crystallize/precipitate after expansion of the fluid, thereby obtaining a solution of the solvent and the solute in the vessel; (c) having at least one orifice opened on the vessel, thereby causing the pressurized solution to flow out of the vessel and depressurize in ambient air or in an expansion chamber having a lower pressure than within the vessel, the solute thereby forming particles; and (d) depositing the particles on the substrate in order to obtain a superhydrophobic surface.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: May 13, 2014
    Assignee: Cellutech AB
    Inventors: Oskar Peter Werner, Lars-Erik Rudolf Wagberg, Can Quan, Charlotta Kristina Turner, Jan-Christer Eriksson
  • Publication number: 20140079931
    Abstract: The present invention relates to cellulose-based materials comprising nanofibrillated cellulose (NFC) from native cellulose. exhibiting highly superior properties as compared to other cellulose-based materials, a method for preparing such cellulose-based material, and uses thereof are also disclosed.
    Type: Application
    Filed: March 26, 2012
    Publication date: March 20, 2014
    Applicant: CELLUTECH AB
    Inventors: Lars Berglund, Houssine Sehaqui, Qi Zhou
  • Publication number: 20130330543
    Abstract: The present invention provides a method for the production of a superhydrophobic film, surface or material comprising the steps of: (i) providing a composition comprising a hydrophobic substance and a hydrophilic solvent, the hydrophilic solvent being a liquid at a temperature of 25° C. and atmospheric pressure; and (ii) spraying the composition towards a substrate for deposition of a solid residue onto the surface of the substrate for generation of the superhydrophobic film, surface or material; wherein the temperature of the composition is higher that the temperature of the substrate when carrying out step (ii). A composition, use of the composition and a substrate is also provided.
    Type: Application
    Filed: December 16, 2011
    Publication date: December 12, 2013
    Applicant: CELLUTECH AB
    Inventor: Marcus Ruda