Patents by Inventor Beert Jacobs KEESTRA

Beert Jacobs KEESTRA 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).

  • Radiation curable resin composition and rapid three dimensional imaging process using the same
    Patent number: 10358524
    Abstract: The invention relates to a radiation curable resin composition comprising a cationically polymerizable component, a cationic photoinitiator, a hydroxy component, an impact modifier and wherein the resin composition after full cure has a modulus of >2 GPa; a yield stress <70 MPa; and a K1c value >1.3 MPa·(m)1/2 or an Izod value >0.45 J/cm. The resin composition can preferably be used in the preparation of three dimensional objects.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: July 23, 2019
    Assignee: DSM IP ASSETS, B.V.
    Inventors: Paulus Antonius Maria Steeman, Beert Jacobs Keestra, Marco Marcus Matheus Driessen, Debra Lynn Fish Repko, Melvin Zussman
  • RADIATION CURABLE RESIN COMPOSITION AND RAPID THREE DIMENSIONAL IMAGING PROCESS USING THE SAME
    Publication number: 20170327632
    Abstract: The invention relates to a radiation curable resin composition comprising a cationically polymerizable component, a cationic photoinitiator, a hydroxy component, an impact modifier and wherein the resin composition after full cure has a modulus of >2 GPa; a yield stress <70 MPa; and a K1c value >1.3 MPa·(m)1/2 or an Izod value >0.45 J/cm. The resin composition can preferably be used in the preparation of three dimensional objects.
    Type: Application
    Filed: May 4, 2017
    Publication date: November 16, 2017
    Inventors: Paulus Antonius Maria STEEMAN, Beert Jacobs KEESTRA, Marco Marcus Matheus DRIESSEN, Debra Lynn FISH REPKO, Melvin ZUSSMAN