Patents by Inventor Joep Lodewijk Peters

Joep Lodewijk Peters 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).

  • Silica coated quantum dots with improved quantum efficiency
    Patent number: 10578257
    Abstract: The invention provides a method for the production of a luminescent material, (10) based on coated quantum dots (100), comprising: (i) providing luminescent quantum dots (100) in a liquid medium (20) wherein the luminescent quantum dots (100) have an outer layer (105) comprising first cations and first anions; and (ii) providing in a coating process a coating (120) on the outer layer (105) of the quantum dots (100) in the liquid medium (20), wherein the coating (120) comprises a silica coating; wherein during the coating process, or after the coating process, or during and after the coating process, the liquid medium (20) comprises one or more of a third element and a fourth element, wherein the first cation and the third element belong to the same group of the periodic system, and wherein the first anion and the fourth element belong to the same group of the periodic system.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: March 3, 2020
    Assignee: LUMILEDS LLC
    Inventors: Roelof Koole, Patrick John Baesjou, Marcel Rene Bohmer, Joep Lodewijk Peters
  • SILICA COATED QUANTUM DOTS WITH IMPROVED QUANTUM EFFICIENCY
    Publication number: 20170211756
    Abstract: The invention provides a method for the production of a luminescent material, (10) based on coated quantum dots (100), comprising: (i) providing luminescent quantum dots (100) in a liquid medium (20) wherein the luminescent quantum dots (100) have an outer layer (105) comprising first cations and first anions; and (ii) providing in a coating process a coating (120) on the outer layer (105) of the quantum dots (100) in the liquid medium (20), wherein the coating (120) comprises a silica coating; wherein during the coating process, or after the coating process, or during and after the coating process, the liquid medium (20) comprises one or more of a third element and a fourth element, wherein the first cation and the third element belong to the same group of the periodic system, and wherein the first anion and the fourth element belong to the same group of the periodic system.
    Type: Application
    Filed: July 24, 2015
    Publication date: July 27, 2017
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Roelof Koole, Patrick John Baesjou, Marcel Rene Bohmer, Joep Lodewijk Peters