Patents by Inventor Johannes Matheus Theodorus Lambertus Claessens

Johannes Matheus Theodorus Lambertus Claessens 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).

  • DC-to-DC converter
    Patent number: 7202641
    Abstract: A DC-to-DC converter comprising an input inductor which is connected to an input terminal, an output inductor which is connected to an output terminal, a capacitor which is connected in series with and between the inductors, a switch element which is connected via a first resistor to a common input/output conductor and to a first node that is common to the input inductor and the capacitor, and a diode which is connected via a second resistor to the common input/output conductor and to a second node that is common to the output inductor and the capacitor, the switch element being responsive to a switch control signal (Vsw) applied thereto for alternately making the switch element conducting and non-conducting such that currents flowing through the inductors flow through the switch element or through the diode during an on-interval and an off-interval of the switch control signal (Vsw), respectively, a control circuit having at least one measurement input for receiving a current measurement voltage (Vx) across
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: April 10, 2007
    Assignee: Philips Lumileds Lighting Company, LLC
    Inventors: Johannes Matheus Theodorus Lambertus Claessens, Engbert Bernard Gerard Nijhof
  • Lighting arrangement
    Patent number: 7030572
    Abstract: In a lighting arrangement comprising a LED array and a DC-DC-converter for supplying the LED array, the DC-DC-converter is an up-converter and the LED array is coupled between an input terminal and an output terminal. The up-converter generates a very low voltage over the LED array without making use of a transformer.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: April 18, 2006
    Assignee: Lumileds Lighting U.S., LLC
    Inventors: Engbert Bernard Gerard Nijhof, Marcel Johannes Maria Bucks, Johannes Matheus Theodorus Lambertus Claessens, Jozef Petrus Emanuel De Krijger
  • Lighting arrangement
    Publication number: 20040145320
    Abstract: In a lighting arrangement comprising a LED array and a DC-DC-converter for supplying the LED array, the DC-DC-converter is an up-converter and the LED array is coupled between an input terminal and an output terminal. The up-converter generates a very low voltage over the LED array without making use of a transformer.
    Type: Application
    Filed: December 2, 2003
    Publication date: July 29, 2004
    Applicant: Lumileds Lighting U.S., LLC
    Inventors: Engbert Bernard Gerard Nijhof, Marcel Johannes Maria Bucks, Johannes Matheus Theodorus Lambertus Claessens, Jozef Petrus Emanuel De Krijger