Patents by Inventor Ralph Petrus Johannes Adrianus Van Lankveld

Ralph Petrus Johannes Adrianus Van Lankveld 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).

  • Multimode fiber
    Patent number: 8724950
    Abstract: A multimode optical fiber comprises a central core having an alpha profile, a depressed cladding having a portion in continuity with the alpha profile of the central core and a stepped portion, and an outer cladding. The alpha profile is obtained by co-doping at least two dopants. A multimode fiber for Ethernet optical system with an improved bandwidth is thus obtained.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: May 13, 2014
    Assignee: Draka Comteq, B.V.
    Inventors: Denis Molin, Yves Lumineau, Pierre Sillard, Ralph Petrus Johannes Adrianus Van Lankveld, Koen de Jongh
  • Multimode Fiber
    Publication number: 20110305423
    Abstract: A multimode optical fiber comprises a central core having an alpha profile, a depressed cladding having a portion in continuity with the alpha profile of the central core and a stepped portion, and an outer cladding. The alpha profile is obtained by co-doping at least two dopants. A multimode fiber for Ethernet optical system with an improved bandwidth is thus obtained.
    Type: Application
    Filed: August 25, 2011
    Publication date: December 15, 2011
    Applicant: Draka Comteq B.V.
    Inventors: Denis Molin, Yves Lumineau, Pierre Sillard, Ralph Petrus Johannes Adrianus Van Lankveld, Koen de Jongh
  • Multimode fiber
    Patent number: 8009950
    Abstract: A multimode optical fiber comprises a central core having an alpha profile, a depressed cladding having a portion in continuity with the alpha profile of the central core and a stepped portion, and an outer cladding. The alpha profile is obtained by co-doping at least two dopants. The variation in concentration of each dopant and its derivative in relation to the fiber radius are continuous. A multimode fiber for Ethernet optical system with an improved bandwidth is thus obtained.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: August 30, 2011
    Assignee: Draka Comteq, B.V.
    Inventors: Denis Molin, Yves Lumineau, Pierre Sillard, Ralph Petrus Johannes Adrianus Van Lankveld, Koen de Jongh
  • Multimode Fiber
    Publication number: 20100254653
    Abstract: A multimode optical fiber comprises a central core having an alpha profile, a depressed cladding having a portion in continuity with the alpha profile of the central core and a stepped portion, and an outer cladding. The alpha profile is obtained by co-doping at least two dopants. The variation in concentration of each dopant and its derivative in relation to the fiber radius are continuous. A multimode fiber for Ethernet optical system with an improved bandwidth is thus obtained.
    Type: Application
    Filed: April 22, 2010
    Publication date: October 7, 2010
    Applicant: DRAKA COMTEQ B.V.
    Inventors: Denis Molin, Yves Lumineau, Pierre Sillard, Ralph Petrus Johannes Adrianus Van Lankveld, Koen de Jongh