Patents by Inventor Heinz Tonniges

Heinz Tonniges 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).

  • Patent number: 4525321
    Abstract: The invention relates to a process for preparing flat articles which are moulded in any desired shaped in dry moulds from defibrated components of wood. In this process, the moisture required to give good felting remains a constituent of the wood fibres until the moulding stage. These wood fibres are mixed with fibre- and/or moisture-reactive binders and, if appropriate, auxiliaries, are metered by means of a gravity-compensating air stream onto a preform sieve, and are then compression-moulded without a cooling cycle in sieve-free moulds between two surfaces which are smooth or embossed in any desired pattern.
    Type: Grant
    Filed: March 7, 1983
    Date of Patent: June 25, 1985
    Assignee: Deutsche Fibrit Gesellschaft Ebers & Dr. Muller mbH
    Inventor: Heinz Tonniges