Patents by Inventor Johannes Cramer

Johannes Cramer 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).

  • Publication number: 20140227474
    Abstract: This present invention relates to a multilayered fabric consisting of several twin layers, whereby each twin layers is constructed from two layers, namely one layer from structurally arranged reinforcement fibres Vo, Vm and Vu such as for example carbon fibres, and one layer from structurally arranged thermoplastic matrix fibres M1 and M2, such as for example PEEK fibres. Several twin layers are connected with binder fibre B. Additionally the invention comprises use of the multilayer fabric as a semi-finished product and for manufacture of composites plus a process for manufacture of composites using a special multilayered fabric with an “Advanced Synchron Weave” zero crimp fabric structure (FIG. 1).
    Type: Application
    Filed: May 18, 2012
    Publication date: August 14, 2014
    Applicant: C. CRAMER, WEBEREI, HEEK-NIENBORG, GMBH & CO. KG
    Inventor: Johannes Cramer
  • Patent number: 5385774
    Abstract: A roof material for motor vehicles includes an upper fabric, a lower fabric and a rubber layer arranged between them. The upper fabric includes polyacrylonitrile warp and filling threads. The warp threads are endless filaments (multifilaments). The upper fabric has a protective, polymeric coating on its top side. The rubber layer includes two rubber layers with an intermediate layer of high-strength material.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: January 31, 1995
    Assignee: Gebr. Happich GmbH
    Inventors: Johannes Cramer, Erwin Winterberg, Hans Nockemann