Patents by Inventor Erich Hilgeroth

Erich Hilgeroth 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).

  • Process for conditioning synthetic fiber material
    Patent number: 4773109
    Abstract: The conditioning of synthetic fiber material to produce perfect products with a low residual solvent content using comparatively small quantities of steam is carried out in a steam-tight conditioning apparatus consisting of several zones with a rotating perforated belt, using steam which has been superheated to temperatures of from 105.degree. to 150.degree. C., and the material having a residence time in the apparatus of more than 3 minutes.
    Type: Grant
    Filed: September 9, 1987
    Date of Patent: September 27, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Reinehr, Rolf-Burkhard Hirsch, Wolfram Wagner, Erich Hilgeroth
  • Process and an apparatus for conditioning synthetic fiber material
    Patent number: 4718257
    Abstract: The conditioning of synthetic fiber material to produce perfect products with a low residual solvent content using comparatively small quantities of steam is carried out in a steam-tight conditioning apparatus consisting of several zones with a rotating perforated belt, using steam which has been superheated to temperatures of from 105.degree. to 150.degree. C., and the material having a residence time in the apparatus of more than 3 minutes.
    Type: Grant
    Filed: October 17, 1986
    Date of Patent: January 12, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Reinehr, Rolf-Burkhard Hirsch, Wolfram Wagner, Erich Hilgeroth