Patents by Inventor Tilman Doring

Tilman Doring 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 producing hollow bodies of oriented thermoplastic material
    Patent number: 4894198
    Abstract: In a process for producing hollow bodies of oriented thermoplastic material, a hollow blank having a bottom portion and a substantially cylindrical wall portion with an opening at its end remote from its bottom portion is subjected to pre-expansion in the region of the opening and then thermofixing in a subsequent treatment step. The thermofixing operation may be preceded by a mechanical expansion operation for orienting the plastic material forming the wall portion of the blank.
    Type: Grant
    Filed: December 4, 1987
    Date of Patent: January 16, 1990
    Assignee: Krupp Corpoplast
    Inventors: Peter Albrecht, Karl-Heinz Balkau, Vinco Cujic, Tilman Doring, Claus Horwege, Wolfgang Reymann, Klaus Vogel, Walter Wiedenfeld