Patents by Inventor Hendrikus J.M. FRERIKS

Hendrikus J.M. FRERIKS 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).

  • Method of forming a nozzle of a fluid ejection device
    Patent number: 9056471
    Abstract: A method of forming a nozzle of a fluid ejection device, the nozzle having a straight mouth portion and a cavity portion, wherein the mouth portion is formed in a bottom surface of the substrate, and, after passivating the walls of the mouth portion, a wet etch process is applied from the bottom surface of the substrate for forming a part of the cavity portion with walls that diverge from the mouth portion, characterized in that a wet etch process is also applied from a top surface of the substrate for forming a part of the cavity portion which diverges towards the bottom surface and merges with the part that is etched from the bottom surface.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: June 16, 2015
    Assignee: OCE-TECHNOLOGIES B.V.
    Inventors: David D. L. Wijngaards, Alex N. Westland, Hendrikus J. M. Freriks, René J. Van Der Meer, Maikel A. J. Huygens, Hubertus M. J. M. Boesten
  • Droplet ejection device
    Patent number: 8998382
    Abstract: A droplet ejection device comprising a flow passage, a nozzle orifice formed in a wall of the flow passage, a circulation system for circulating a liquid through the flow passage, and an actuator system for generating a pressure wave in the liquid in the flow passage, wherein an obstruction member is arranged in the flow passage in a position opposite to the nozzle orifice and projecting towards the nozzle orifice.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: April 7, 2015
    Assignee: Oce-Technologies B.V.
    Inventors: Hendrikus J. M. Freriks, Hans Reinten, Marcus J. Van Den Berg, Igor Shklyarevskiy, Klaas Verzijl, Ronald Berkhout
  • DROPLET EJECTION DEVICE
    Publication number: 20140210910
    Abstract: A droplet ejection device comprising a flow passage, a nozzle orifice formed in a wall of the flow passage, a circulation system for circulating a liquid through the flow passage, and an actuator system for generating a pressure wave in the liquid in the flow passage, wherein an obstruction member is arranged in the flow passage in a position opposite to the nozzle orifice and projecting towards the nozzle orifice.
    Type: Application
    Filed: April 2, 2014
    Publication date: July 31, 2014
    Applicant: OCE-TECHNOLOGIES B.V.
    Inventors: Hendrikus J.M. FRERIKS, Hans REINTEN, Marcus J. VAN DEN BERG, Igor SHKLYAREVSKIY, Klaas VERZIJL, Ronald BERKHOUT
  • METHOD OF FORMING A NOZZLE OF A FLUID EJECTION DEVICE
    Publication number: 20140021168
    Abstract: A method of forming a nozzle of a fluid ejection device, the nozzle having a straight mouth portion and a cavity portion, wherein the mouth portion is formed in a bottom surface of the substrate, and, after passivating the walls of the mouth portion, a wet etch process is applied from the bottom surface of the substrate for forming a part of the cavity portion with walls that diverge from the mouth portion, characterized in that a wet etch process is also applied from a top surface of the substrate for forming a part of the cavity portion which diverges towards the bottom surface and merges with the part that is etched from the bottom surface.
    Type: Application
    Filed: September 27, 2013
    Publication date: January 23, 2014
    Applicant: OCE TECHNOLOGIES B.V.
    Inventors: David D.L. WIJNGAARDS, Alex N. WESTLAND, Hendrikus J.M. FRERIKS, René J. VAN DER MEER