Patents by Inventor Andre Schroder

Andre Schroder 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).

  • Novel additives for improving the wet strength and dry strength of paper
    Publication number: 20020096282
    Abstract: The invention relates to a process for the treatment of paper consisting of the application to the paper either of a cationic resin, PAE, and of a latex containing acid functional groups, the resin and the latex being applied simultaneously but separately, or of a stable mixture prepared beforehand containing the PAE and a latex stabilized by a nonionic surfactant.
    Type: Application
    Filed: June 20, 2001
    Publication date: July 25, 2002
    Applicant: Elf Atochem S.A.
    Inventors: Ludwik Leibler, Andre Schroder, Isabelle Betremieux, Isabelle Silberzan