Patents by Inventor Rolf Kocher

Rolf Kocher 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).

  • Plastics-processing machine
    Patent number: 4170446
    Abstract: The plastics processing machine employs a mixer which has a static mixing device formed of at least one insertion member composed of guide elements in layers which form flow channels. The hydraulic diameter d.sub.h is made no more than eight millimeters (8 mm) in order to obtain a high mixing quality. The hydraulic diameter may vary along the mixer, for example by decreasing from the inlet end to the outlet end.
    Type: Grant
    Filed: April 20, 1977
    Date of Patent: October 9, 1979
    Assignee: Sulzer Brothers Limited
    Inventors: Gerhard Schutz, Rolf Kocher