Patents by Inventor Nicola Bettina Bettina Pfeffer

Nicola Bettina Bettina Pfeffer 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).

  • Tube luminescent retrofit using light emitting diodes
    Patent number: 9068715
    Abstract: The invention relates to a LED-based optical unit including a LED disposed on a surface and a monolithic module encompassing the LED and including a re-directing portion and a first diffusing portion. The first diffusing portion is configured to diffuse light incident thereon. The re-directing portion is configured to re-direct at least a first portion of light emitted by the LED to be incident on the first diffusing portion.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: June 30, 2015
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Arjen Gerben Van Der Sijde, Tewe Hiepke Hiepke Heemstra, Nicola Bettina Bettina Pfeffer
  • Tube luminescent retrofit using light emitting diodes
    Publication number: 20130235590
    Abstract: The invention relates to a LED-based optical unit including a LED disposed on a surface and a monolithic module encompassing the LED and including a re-directing portion and a first diffusing portion. The first diffusing portion is configured to diffuse light incident thereon. The re-directing portion is configured to re-direct at least a first portion of light emitted by the LED to be incident on the first diffusing portion.
    Type: Application
    Filed: November 23, 2011
    Publication date: September 12, 2013
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Arjen Gerben Van Der Sijde, Tewe Hiepke Hiepke Heemstra, Nicola Bettina Bettina Pfeffer