Patents by Inventor Anna Marx

Anna Marx 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).

  • Sizing agent for glass fibers
    Patent number: 4659753
    Abstract: In an aqueous sizing agent for glass fibers, comprising a bonding agent, a film-former and, optionally, a lubricant, wetting agent and/or other conventional additive, the improvement which comprises including therein a masked polyisocyanate which is water-soluble or dispersible. The sized glass fibers are especially useful in reinforcing polymeric products such as polyamides, giving improved physical properties.
    Type: Grant
    Filed: October 5, 1984
    Date of Patent: April 21, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christoph Tiburtius, Anna Marx, Hans-Ulrich Buschhaus, Kurt Findeisen