Patents by Inventor Friedrich Heinrich Erfmann

Friedrich Heinrich Erfmann 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).

  • Production of fiber composite
    Patent number: 5827460
    Abstract: A fiber composite is produced by continuously pressing together a thermoplastic melt and a glass fiber mat or tape in a double belt press and cooling the composite under pressure. The double belt press is sealed off on both sides by endless, traveling belts made of a compressible material.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: October 27, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl-Ludwig Brentrup, Friedrich Heinrich Erfmann