Patents by Inventor Rolf Steinberger

Rolf Steinberger 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).

  • Manufacture of fibrids from poly(amide-imide) resins
    Patent number: 4091058
    Abstract: Fibrids are prepared by introducing a solution of a polymer into a liquid precipitation medium while exposing it to shearing forces. A poly(amide-imide) resin solution is admixed with a solvent which is miscible with the resin solvent but which is a non-solvent for the resin itself.
    Type: Grant
    Filed: September 28, 1976
    Date of Patent: May 23, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Bruno Sander, Kurt Scherling, Rolf Steinberger, Eckhard Ropte