Patents by Inventor Johannes W. H. Handels

Johannes W. H. Handels 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: 6342273
    Abstract: The invention relates to a process for coating a substrate with a powder paint composition. The powder paint particles are first charged by friction or induction in the presence of magnetic or nonmagnetic particles, are next transported and are then applied to the substrate or applied to a transfer medium and subsequently transferred to the substrate, by means of an electric field between the substrate respectively the transfer medium and the means of transport whereafter the ponder paint composition is cured or fused to obtain a powder coating.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: January 29, 2002
    Assignees: DSM N.V., Michael Huber Munchen GmbH
    Inventors: Johannes W. H. Handels, Paulus A. M. Steeman, Detlef Schulze-Hagenest, Burkard Huber, Tosko A. Misev, Jorg Buchweitz
  • Patent number: 4528257
    Abstract: Toner powder the particles of which are composed of thermoplastic resin, coloring material and possibly other additives such as magnetically attractable material comprises as the principal resin a thermoplastic polymer containing in its molecule one or more each of mutually immiscible crystalline and amorphous polymeric blocks, the crystalline blocks forming the continuous phase in the polymer and having a melting point between 45.degree. and 90.degree. C. and the amorphous blocks having a Tg at least 10.degree. C. above the melting point of the crystalline blocks. The toner powder is especially beneficial for use in a method of transferring and fixing powder images in which an image formed of the powder is softened by heating it on a medium having less surface adhesivity for the softened powder than has the image receiving material and the softened powder on this medium is brought into pressure-contact with substantially unheated image receiving material.
    Type: Grant
    Filed: June 9, 1983
    Date of Patent: July 9, 1985
    Assignee: Oce-Nederland B.V.
    Inventors: Arie Polderman, Johannes W. H. Handels, Johannes H. Kuit