Patents by Inventor Ebbe Lyrmalm

Ebbe Lyrmalm 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).

  • Aqueous compositions for sizing of paper
    Patent number: 5627224
    Abstract: The present invention provides a paper sizing composition which comprises a sizing agent selected from cyclic dicarboxylic acid anhydride or alkyl ketene dimer, a stabilizing and/or dispersing agent which is an amphoteric polymer and a polyaluminum compound.
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: May 6, 1997
    Assignee: Eka Nobel AB
    Inventors: Ebbe Lyrmalm, Bruno Carr e