Patents by Inventor Duleep Jayanath Thirmawithana

Duleep Jayanath Thirmawithana 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).

  • Multilevel converter
    Patent number: 11223233
    Abstract: An inductive power transfer (IPT) converter has a first switching means adapted to produce a time varying input power signal comprising a substantially unipolar stepped waveform, and a second switching means adapted to modify the time varying input power signal provided by the first switching means to produce a modified input power signal. The converter is coupled to a resonant circuit to receive the modified input signal.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: January 11, 2022
    Assignee: AUCKLAND UNISERVICES LIMITED
    Inventors: Udaya Kumara Madawala, Duleep Jayanath Thirmawithana, Hamid Reza Rahnamaee
  • A MULTILEVEL CONVERTER
    Publication number: 20170070096
    Abstract: An inductive power transfer (IPT) converter has a first switching means adapted to produce a time varying input power signal comprising a substantially unipolar stepped waveform, and a second switching means adapted to modify the time varying input power signal provided by the first switching means to produce a modified input power signal. The converter is coupled to a resonant circuit to receive the modified input signal.
    Type: Application
    Filed: February 23, 2015
    Publication date: March 9, 2017
    Inventors: Udaya Kumara Madawala, Duleep Jayanath Thirmawithana, Hamid Reza Rahnamaee