Patents by Inventor Johannes Cornelis Lamers

Johannes Cornelis Lamers 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).

  • Single crystal diamond elements having convex surfaces and methods of its fabrication
    Patent number: 8309205
    Abstract: A single crystal diamond element having a convex surface is disclosed, the convex surface including a spherical segment for which the maximum peak to valley deviation from a perfect spherical surface is less than about 5 ?m. Alternatively or in addition, the RMS deviation from a perfect spherical surface may be less than about 500 nm, or the RMS roughness less than about 30 nm. A single crystal diamond element with a radius of curvature less than about 20 mm is also disclosed. In one aspect a single crystal diamond element having a conical half-angle greater than about 10° is described. The invention also provides a method for forming a rotationally symmetrical surface on a single crystal diamond element, comprising rotating the element about a first axis, applying a laser beam to the element in a direction perpendicular to the first axis, and translating the laser beam in two dimensions in a plane perpendicular to the direction of the beam.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: November 13, 2012
    Assignee: Element Six Limited
    Inventors: Wilhelmus Gerarda Maria Nelissen, Herman Philip Godfried, Evert Pieter Houwman, Paulus Adrianus Cornelis Kriele, Johannes Cornelis Lamers, Gerrit Jan Pels, Bartholomeus Mathias Van Oerle, Paulus Geradus Hendricus Maria Spaay, Mark Robin McClymont, Christopher John Howard Wort, Geoffrey Alan Scarsbrook
  • SINGLE CRYSTAL DIAMOND ELEMENTS HAVING CONVEX SURFACES AND METHODS OF ITS FABRICATION
    Publication number: 20090022951
    Abstract: A single crystal diamond element having a convex surface is disclosed, the convex surface including a spherical segment for which the maximum peak to valley deviation from a perfect spherical surface is less than about 5 ?m. Alternatively or in addition, the RMS deviation from a perfect spherical surface may be less than about 500 nm, or the RMS roughness less than about 30 nm. A single crystal diamond element with a radius of curvature less than about 20 mm is also disclosed. In one aspect a single crystal diamond element having a conical half-angle greater than about 10° is described. The invention also provides a method for forming a rotationally symmetrical surface on a single crystal diamond element, comprising rotating the element about a first axis, applying a laser beam to the element in a direction perpendicular to the first axis, and translating the laser beam in two dimensions in a plane perpendicular to the direction of the beam.
    Type: Application
    Filed: July 7, 2006
    Publication date: January 22, 2009
    Inventors: Wilhelmus Gerarda Maria Nelissen, Herman Philip Godfried, Evert Pieter Houwman, Paulus Adrianus Cornelis Kriele, Johannes Cornelis Lamers, Gerrit Jan Pels, Bartholomeus Mathias Van Oerle, Paulus Gerardus Hendricus Maria Spaay, Mark Robin McClymont, Christopher John Howard Wort, Geoffrey Alan Scarsbrook