Patents by Inventor Synnøve Holtan

Synnøve Holtan 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: 11820920
    Abstract: The present invention relates to a composition for use as an adhesive, paint, coating, resin, (surface) size, composite, gel or hydrogel, said composition comprising microfibrillated cellulose (“MFC”). In addition to microfibrillated cellulose, these compositions comprise at least one solvent, said solvent preferably comprising or consisting of water, and at least one compound that is (a) capable of polymerizing, or has already partly or fully, polymerized, and that (b) has at least two groups available for hydrogen bonding, preferably OH groups, that are capable of crosslinking with at least one functional group of the microfibrillated cellulose.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: November 21, 2023
    Assignee: Borregaard AS
    Inventors: Synnøve Holtan, Katérina Liapis, Tom Stylo, Jan Berg
  • Publication number: 20230051816
    Abstract: The present invention relates to an adhesive composition comprising, among others, (i) microfibrillated cellulose and (ii) a metal in oxidation state of II or greater. The present invention further relates to uses of such an adhesive composition and to products prepared with such an adhesive composition. Furthermore, the present invention relates to a process for making corrugated paperboards or cardboards, or solid paperboards or cardboards by using such an adhesive composition.
    Type: Application
    Filed: February 5, 2021
    Publication date: February 16, 2023
    Inventors: Synnøve Holtan, Katérina Liapis, Steen Jacobsen, Hans Henrik Øvrebø, Jan Berg
  • Patent number: 11332647
    Abstract: The present invention relates to starch-based adhesive compositions comprising microfibrillatedcellulose (“MFC”). In addition to microfibrillated cellulose, these adhesive compositions comprise at least one starch and/or at least one starch derivative.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: May 17, 2022
    Assignee: Borregaard AS
    Inventors: Synnøve Holtan, Katérina Liapis, Jan Berg
  • Publication number: 20220136175
    Abstract: The present invention relates to a high speed process for making corrugated paperboards and cardboards, said paperboards and cardboards comprising chemically treated paper, and said process using a starch-based adhesive that comprises microfibrillated cellulose. The present invention also relates to corrugated paperboards and cardboards comprising said starch-based adhesive composition comprising microfibrillated cellulose and said chemically treated paper.
    Type: Application
    Filed: February 19, 2020
    Publication date: May 5, 2022
    Inventors: Synnøve Holtan, Steen Jacobsen, Katérina Liapis, Yasuhide Numata, Yasuhiro Yamamori, Hironori Tanaka, Jan Berg, Odd Henry Pedersen
  • Publication number: 20210261831
    Abstract: The present invention relates to starch-based adhesive compositions comprising microfibrillated cellulose (“MFC”). In addition to microfibrillated cellulose, these adhesive compositions comprise at least one starch and/or at least one starch derivative. The adhesive compositions have a reduced amount of caustic soda vis-a-vis adhesive compositions that do not comprise MFC as an additive. Borax or boric acid (or any derivative thereof) may be partially or fully replaced with microfibrillated cellulose, wherein MFC (contrary to borax) surprisingly does not significantly affect the gel temperature of the overall adhesive.
    Type: Application
    Filed: July 5, 2019
    Publication date: August 26, 2021
    Inventors: Synnøve Holtan, Katérina Liapis, Jan Berg
  • Publication number: 20200270428
    Abstract: The present invention relates to a composition for use as an adhesive, paint, coating, resin, (surface) size, composite, gel or hydrogel, said composition comprising microfibrillated cellulose (“MFC”). In addition to microfibrillated cellulose, these compositions comprise at least one solvent, said solvent preferably comprising or consisting of water, and at least one compound that is (a) capable of polymerizing, or has already partly or fully, polymerized, and that (b) has at least two groups available for hydrogen bonding, preferably OH groups, that are capable of crosslinking with at least one functional group of the microfibrillated cellulose.
    Type: Application
    Filed: August 14, 2018
    Publication date: August 27, 2020
    Inventors: Synnøve Holtan, Katérina Liapis, Tom Stylo, Jan Berg
  • Publication number: 20200248042
    Abstract: The present invention relates to starch-based adhesive compositions comprising microfibrillatedcellulose (“MFC”). In addition to microfibrillated cellulose, these adhesive compositions comprise at least one starch and/or at least one starch derivative.
    Type: Application
    Filed: August 14, 2018
    Publication date: August 6, 2020
    Inventors: Synnøve Holtan, Katérina Liapis, Jan Berg
  • Publication number: 20190284762
    Abstract: The present invention relates to microfibrillated cellulose (“MFC”), in particular to microfibrillated cellulose, which is morphologically different from conventional MFC known in the art and/or which provides improved water retention properties and/or improved rheological properties, in particular increased zero shear viscosity, ?0, (also known as: “viscosity at rest”, i.e. viscosity in the absence of shear forces), in solution, in particular in polyethylene glycol (PEG) as solvent, vis-à-vis conventional MFC as known in the art.
    Type: Application
    Filed: May 16, 2019
    Publication date: September 19, 2019
    Inventors: Synnøve Holtan, Marianne Rosenberg Read, Hans Henrik Øvrebø, Inger Mari Nygård Vold
  • Patent number: 10337146
    Abstract: The present invention relates to microfibrillated cellulose (“MFC”), in particular to microfibrillated cellulose, which is morphologically different from conventional MFC known in the art and/or which provides improved water retention properties and/or improved rheological properties, in particular increased zero shear viscosity, ?0, (also known as: “viscosity at rest”, i.e. viscosity in the absence of shear forces), in solution, in particular in polyethylene glycol (PEG) as solvent, vis-a-vis conventional MFC as known in the art.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: July 2, 2019
    Assignee: Borregaard AS
    Inventors: Synnøve Holtan, Marianne Rosenberg Read, Hans Henrik Øvrebø, Inger Mari Nygård Vold
  • Publication number: 20180274173
    Abstract: The present invention relates to microfibrillated cellulose (“MFC”), in particular to microfibrillated cellulose, which is morphologically different from conventional MFC known in the art and/or which provides improved water retention properties and/or improved rheological properties, in particular increased zero shear viscosity, ?o, (also known as: “viscosity at rest”, i.e. viscosity in the absence of shear forces), in solution, in particular in polyethylene glycol (PEG) as solvent, vis-a-vis conventional MFC as known in the art.
    Type: Application
    Filed: May 15, 2018
    Publication date: September 27, 2018
    Inventors: Synnøve Holtan, Marianne Rosenberg Read, Hans Henrik Øvrebø, Inger Mari Nygård Vold
  • Publication number: 20170121908
    Abstract: The present invention relates to microfibrillated cellulose (“MFC”), in particular to microfibrillated cellulose, which is morphologically different from conventional MFC known in the art and/or which provides improved water retention properties and/or improved rheological properties, in particular increased zero shear viscosity, ?0, (also known as: “viscosity at rest”, i.e. viscosity in the absence of shear forces), in solution, in particular in polyethylene glycol (PEG) as solvent, vis-a-vis conventional MFC as known in the art.
    Type: Application
    Filed: May 29, 2015
    Publication date: May 4, 2017
    Inventors: Synnøve Holtan, Marianne Rosenberg Read, Hans Henrik Øvrebø, Inger Mari Nygård Vold
  • Publication number: 20120100367
    Abstract: The present invention relates to the use of microfibrillated cellulose (MFC) as an air release agent in viscous compositions that are subjected to a hardening step. The air release agent according to the invention is added prior to or during said hardening step, in particular drying, cooling and/or curing process. The present invention also relates to such viscous compositions in an article comprising the MFC as further specified in the description as an air release agent.
    Type: Application
    Filed: March 19, 2010
    Publication date: April 26, 2012
    Applicant: BORREGAARD INDUSTRIES LIMITED, NORGE
    Inventors: Synnoeve Holtan, Michael Hansen, Hans Henrik Oevreboe
  • Publication number: 20120090192
    Abstract: The invention relates to a method for drying microfibrillated cellulose, comprising at least the following steps: (i) applying a composition comprising microfibrillated cellulose and a liquid onto a cold surface; (H) removing the frozen composition formed in step (i) from said surface to form frozen particles; (iii) optionally increasing the size of the frozen particles formed in step (ii); (iv) drying the frozen particles formed in step (iii) comprising: subjecting said particles to a cold moving gas thus removing liquid by means comprising sublimation and optionally (v) isolating the microfibrillated cellulose formed in step (iv). The invention also relates to a device for carrying out the method of the invention.
    Type: Application
    Filed: March 10, 2010
    Publication date: April 19, 2012
    Applicant: BORREGAARD INDUSTRIES LIMITED, NORGE
    Inventors: Hans Henrik Oevreboe, Jens-Uwe Wichmann, Anne Opstad, Synnoeve Holtan