Patents by Inventor Rik Dewitte

Rik Dewitte 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: 8858848
    Abstract: A conductive plastic article (31) is disclosed suited for a housing that offers improved shielding against electromagnetic interference or that offers improved electrostatic discharge properties. The plastic article is made by means of low pressure injection molding. The article (31) comprises at least 0.25 volume percent of electrically conductive additives (38). The article (31) comprises a cellular structure. The cellular structure is created by the use of a blowing or foaming agent. At least 0.25 weight percent of blowing or foaming agent is used in the production of the conductive plastic article (31).
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: October 14, 2014
    Assignee: NV Bekaert SA
    Inventors: Rik Dewitte, Wim Verbrugge
  • Publication number: 20130081871
    Abstract: A conductive plastic article (31) is disclosed suited for a housing that offers improved shielding against electro-magnetic interference or that offers improved electrostatic discharge properties. The plastic article is made by means of low pressure injection moulding. The article (31) comprises at least 0.25 volume per cent of electrically conductive additives (38). The article (31) comprises a cellular structure. The cellular structure is created by the use of a blowing or foaming agent. At least 0.25 weight percent of blowing or foaming agent is used in the production of the conductive plastic article (31).
    Type: Application
    Filed: May 26, 2011
    Publication date: April 4, 2013
    Inventors: Rik Dewitte, Wim Verbrugge
  • Publication number: 20080248230
    Abstract: An electromagnetic shielding housing is presented that is made up out of one or more shells. The shells comprise polymer and conductive fibres and have a polymer rich surface that covers the fibres except for predefined areas where the fibres are substantially uncovered. The conductive fibres can be metal-coated non-metallic fibres or plain metallic fibres, preferably plain stainless steel fibres. A method for uncovering the fibres is also presented which comprises the breaking-off of selected protrusions or the breaking of the shell at selected recesses so as to uncover the fibres. The housing and the method solve the problem that the polymer skin leads to inferior shielding at the joint of the shells.
    Type: Application
    Filed: February 3, 2006
    Publication date: October 9, 2008
    Applicants: NV BEKAERT SA, SABIC INNOVATIVE PLASTICS BV
    Inventors: Rik Dewitte, Wim Verbrugge, Stefaan De Bondt, Paul Abraham Willems, Robert Frans Brounne