Patents by Inventor Lotte Herrmann

Lotte Herrmann 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).

  • Patent number: 4606154
    Abstract: A coated abrasive material comprising a textile backing--in the form of fabric, webbing, fleece and/or laminated material, base binder, abrasive particles and optionally size coat which is characterized in that the textile backing is extensible and that on the particle side an elastic intermediate layer is applied which lies between the textile backing and the usual base binder. This intermediate layer may contain caoutchouc latex and/or polyurethane and/or polymers, which contain butadiene and/or acrylic acid ester. The flexible and extensible coated abrasive may be used for profile grinding, sanding or polishing.
    Type: Grant
    Filed: November 18, 1983
    Date of Patent: August 19, 1986
    Assignee: SIA Schweizer Schmirgel- und Schleif-Industrie AG
    Inventors: Lotte Herrmann, Jakob Ackermann, Armin Steiner