Patents by Inventor Martinus Henricus Valentinus Werts

Martinus Henricus Valentinus Werts 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).

  • Patent number: 6723454
    Abstract: Luminescent device containing a luminescent material comprising organic lanthanide complexes comprising organic ligands of which at least one organic ligand is an aromatic ketone comprising a substituted electron donor group. This material has improved luminescence properties, and may be used in electroluminescent devices.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: April 20, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Jan Willem Verhoeven, Martinus Henricus Valentinus Werts, Johannes Willem Hofstraat