Patents by Inventor James Axel Christer Bjorklund

James Axel Christer Bjorklund 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).

  • Process for sizing cellulose fibers with sulfamoylchlorides
    Patent number: 4043863
    Abstract: The present invention relates to a process for sizing cellulose fibers or cellulose fiber containing materials and to a composition for carrying out the process. More particularly the invention relates to a process for sizing according to which cellulose fibers or cellulose fiber containing materials in a manner known per se are brought into contact with compounds having the general formula ##STR1## WHEREIN R.sub.1 is an organic, hydrophobic group having 8 to 40 carbon atoms and R.sub.2 is an alkyl group having 1 to 7 carbon atoms or has the same meaning as R.sub.1.
    Type: Grant
    Filed: March 1, 1976
    Date of Patent: August 23, 1977
    Assignee: Kemanord Aktiebolag
    Inventors: James Axel Christer Bjorklund, Turid Ekengren
  • Process for sizing cellulose fibre containing material
    Patent number: 3930932
    Abstract: The present invention relates to a process for sizing cellulose fibers or cellulose fiber containing materials and a composition for carrying out the process. According to the process the time for developing full sizing effect of ketene dimers and carbamoyl chlorides is reduced by carrying out sizing in the presence of a chloroformate or an isocyanate. The composition for carrying out the process comprises of a paper sizing composition containing the sizing agents mentioned above in combination with a chloroformate or an isocyanate.
    Type: Grant
    Filed: January 31, 1974
    Date of Patent: January 6, 1976
    Assignee: Kemanord AB
    Inventors: James Axel Christer Bjorklund, Karin Ulla Elisabet Helmer