Patents by Inventor Jonas Fredrik Hafren

Jonas Fredrik Hafren 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).

  • Sheet-formed fibrous material with improved strength property
    Patent number: 8568564
    Abstract: A method of improving a strength property of a sheet-formed fibrous material formed from an aqueous slurry of cellulose fiber, including coating at least one face of the material with a coating formulation including a polysaccharide containing at least two carboxylic groups and low molecular weight organic mono-, di- or poly-carboxylic acid in an aqueous carrier, keeping the coated face at a temperature of 50° C. or more for a time sufficient to obtain the desired improvement including drying of the material.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: October 29, 2013
    Assignee: OrganoClick AB
    Inventors: Armando Córdova, Jonas Fredrik Hafrén, Karl Enquist, Joseph Samec
  • SHEET-FORMED FIBROUS MATERIAL WITH IMPROVED STRENGTH PROPERTY
    Publication number: 20110114276
    Abstract: A method of improving a strength property of a sheet-formed fibrous material formed from an aqueous slurry of cellulose fiber, including coating at least one face of the material with a coating formulation including a polysaccharide containing at least two carboxylic groups and low molecular weight organic mono-, di- or poly-carboxylic acid in an aqueous carrier, keeping the coated face at a temperature of 50° C. or more for a time sufficient to obtain the desired improvement including drying of the material.
    Type: Application
    Filed: April 2, 2009
    Publication date: May 19, 2011
    Applicant: OrganoClick AB
    Inventors: Armando Córdova, Jonas Fredrik Hafrén, Karl Enquist, Joseph Samec
  • MODIFICATION OF AMINES AND ALCOHOLS
    Publication number: 20090111980
    Abstract: A process for the modification of amines and alcohols, comprising (i) providing a substrate having amino groups or alcohol groups, wherein said substrate is, e.g., a polysaccharide; (ii) providing a modifying agent which is a lactone, an ester, a polyester, a carbonate, a polycarbonate, a lactide, a glycolide, an anhydride, an acid, a thioester or a carbamate; (iii) providing a catalyst which is, e.g., a amino acid or an organic acid; and (iv) reacting the substrate with the modifying agent in the presence of the catalyst.
    Type: Application
    Filed: December 21, 2005
    Publication date: April 30, 2009
    Applicant: ORGANOCLICK AB
    Inventors: Jonas Fredrik Hafren, Armando Cordova