Patents by Inventor Janos Kleban

Janos Kleban 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 the preparation of a material of composite structure
    Patent number: 4464510
    Abstract: The invention relates to a process for the preparation of a material of composite structure containing a thermoplastic plastic and a fibrous polymer skeleton material, having a high modulus of torsional shear, good shockproofness and being processable by the formation technologies of thermoplastic plastics. According to the invention one proceeds in such a way that the fibrous polymer skeleton material is treated with a resin mixture consisting of an unsaturated polyester resin and a vinyl monomer in an amount of 1-80 percent by weight, related to the skeleton material.The use of the polyester as adhesion-intermediator considerably improves the homogeneity of the material of composite structure, it makes the substance processable without pregranulation on an extruder with a broad slot or a calendrette, and leads to plates the shockproofness of which significantly exceeds that of plates prepared without such intermediator.
    Type: Grant
    Filed: August 17, 1982
    Date of Patent: August 7, 1984
    Assignee: Muanyagipari Kutato Intezet
    Inventors: Tibor J. Czvikovszky, Tamas Pazonyi, Laszlone I. Topolcai, Janos Kleban