Patents by Inventor Hendricus J. van der Velden

Hendricus J. van der Velden 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).

  • Printing sleeve
    Patent number: 4601928
    Abstract: The invention concerns a printing sleeve made from a cylindrical supporting surface 4 upon which a knitted fabric 2" is applied as a gas-permeable means, providing a sheet of a thermoplastic elastomeric compositions thereupon, and applying a pressure difference and heat so as to press the sheet upon the surface and to obtain a fusion of the sheet with the fabric.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: July 22, 1986
    Assignee: Stork Screens B.V.
    Inventor: Hendricus J. van der Velden
  • Method of forming a printing sleeve
    Patent number: 4554040
    Abstract: The invention concerns a method of forming a printing sleeve, comprising the steps of starting from a cylindrical supporting surface 4 upon which a knitted fabric 2" is applied as a gas-permeable means, providing a sheet of a thermoplastic elastomeric composition thereupon, and applying a pressure difference and heat so as to press the sheet upon said surface and to obtain a fusion of the sheet with the fabric.
    Type: Grant
    Filed: December 8, 1983
    Date of Patent: November 19, 1985
    Assignee: Stork Screens B.V.
    Inventor: Hendricus J. van der Velden
  • Method of making a sleeve for a printing cylinder
    Patent number: 4391898
    Abstract: Sleeve for a printing cylinder, said sleeve comprising a thin-walled cylindrical sieve, for instance a non-designed (plain-mesh) screen functioning as a support element, upon the outer face of which a photopolymer sheet is directly attached, said sheet being hardenable under the influence of radiation.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: July 5, 1983
    Assignee: Stork Screens, B.V.
    Inventor: Hendricus J. van der Velden
  • Method of making a sleeve for a printing cylinder
    Patent number: RE32228
    Abstract: Sleeve for a printing cylinder, said sleeve comprising a thin-walled cylindrical sieve, for instance a non-designed (plain-mesh) screen functioning as a support element, upon the outer face of which a photopolymer sheet is directly attached, said sheet being hardenable under the influence of radiation.
    Type: Grant
    Filed: July 1, 1985
    Date of Patent: August 19, 1986
    Assignee: Stork Screens B.V.
    Inventor: Hendricus J. van der Velden