Patents by Inventor Wilhelm Krall

Wilhelm Krall 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).

  • Method for making a spray dried emulsion polymer
    Patent number: 5017631
    Abstract: Powders of an emulsion polymer having reduced fines and exhibiting low dusting are made by spray drying an emulsion of a polymer having a Vicat softening temperature above 60.degree. C., said emulsion containing an external plasticizer having a boiling point of at least 150.degree. C.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: May 21, 1991
    Assignee: Rohm GmbH
    Inventors: Hubert Rauch, Peter J. Arndt, Wolfgang Klesse, Wilhelm Krall, Klaus Frank