Patents by Inventor Fredrik Wernersson

Fredrik Wernersson 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).

  • BARRIER COATING FOR PAPER AND PAPERBOARD
    Publication number: 20230235512
    Abstract: The present invention relates to an aqueous barrier coating composition comprising: 50-99.9% by weight of one or more anionic low molecular weight polysaccharide(s) having a degree of polymerization (DP) in the range of 2-12; 0.1-10% by weight of a polycationic polymer; based on the total dry weight of the aqueous barrier coating composition.
    Type: Application
    Filed: June 18, 2021
    Publication date: July 27, 2023
    Applicant: Stora Enso OYJ
    Inventors: Mikael Gällstedt, Fredrik Wernersson Brodin, Åsa Nyflött
  • Process for production of oxidised cellulose pulp
    Patent number: 9121134
    Abstract: The present invention relates to a process for producing an oxidized cellulose pulp fibrillar network and a composite with lignocellulosic fibers comprising the following steps: (a) oxidizing a cellulose pulp to obtain about 0.3 to 2.5 mmol carboxylic groups per gram cellulose pulp; and about 0.1 to 5.0 mmol aldehyde groups per gram cellulose pulp; (b) homogenization of the cellulose pulp of step (a) wherein the cellulose fibers are refined to provide a cellulose pulp comprising 0-50% of fibers having an average length 0.7 mm-2.1 mm; and 50-100% of fibers having a particle size of 0.05-500 micrometer (?m); and optionally (c) combining with lignocellulosic fiber. Also step (d) drying of the cellulose pulp obtained by step (b) or step (c) may be included in the process.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: September 1, 2015
    Assignee: Sodra Skogsagarna Ekonomisk Forening
    Inventors: Fredrik Wernersson, Harald Brelid, Hans Theliander, Kristoffer Lund
  • PROCESS FOR PRODUCTION OF OXIDISED CELLULOSE PULP
    Publication number: 20130025807
    Abstract: The present invention relates to a process for producing an oxidised cellulose pulp fibrillar network and a composite with lignocellulosic fibres comprising the following steps: (a) oxidising a cellulose pulp to obtain about 0.3 to 2.5 mmol carboxylic groups per gram cellulose pulp; and about 0.1 to 5.0 mmol aldehyde groups per gram cellulose pulp; (b) homogenisation of the cellulose pulp of step (a) wherein the cellulose fibres are refined to provide a cellulose pulp comprising 0-50% of fibres having an average length 0.7 mm-2.1 mm; and 50-100% of fibres having a particle size of 0.05-500 micrometer (?m); and optionally (c) combining with lignocellulosic fibre. Also step (d) drying of the cellulose pulp obtained by step (b) or step (c) may be included in the process.
    Type: Application
    Filed: January 18, 2011
    Publication date: January 31, 2013
    Applicant: SÖDRA SKOGSÄGARNA EKONOMISK FÖRENING
    Inventors: Fredrik Wernersson, Harald Brelid, Hans Theliander, Kristoffer Lund
  • ABSORBENT ARTICLE COMPRISING A COMPOSITE MATERIAL
    Publication number: 20120302440
    Abstract: An absorbent article including a freeze dried composite material. The freeze dried composite material includes cellulosic pulp (e.g. CTMP) and an absorbent material. The absorbent material includes microfibrillated cellulose (MFC) with a specified content of carboxylate groups.
    Type: Application
    Filed: January 18, 2011
    Publication date: November 29, 2012
    Applicant: SCA HYGIENE PRODUCTS AB
    Inventors: Hans Theliander, Fredrik Wernersson, Harald Brelid, Kristoffer Lund, Charlotta Hanson, Ingrid Gustafson, Torgny Falk