Patents by Inventor Chana Duangpitak

Chana Duangpitak 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).

  • Choke and EMI filter with the same
    Patent number: 9537463
    Abstract: A choke for an EMI filter is provided. The EMI filter includes a first filtering circuit and a second filtering circuit. The choke includes a magnetic core assembly and four winding coils. The magnetic core assembly includes a first magnetic core and a second magnetic core. The first winding coil and the second winding coil are directly wound around the first magnetic core. The third winding coil and the fourth winding coil are directly wound around the second magnetic core. The first winding coil is serially connected with a first positive path of the first filtering circuit. The second winding coil is serially connected with a second positive path of the second filtering circuit. The third winding coil is serially connected with a first negative path of the first filtering circuit. The fourth winding coil is serially connected with a second negative path of the second filtering circuit.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: January 3, 2017
    Assignee: DET INTERNATIONAL HOLDING LIMITED
    Inventors: Adisak Peapoot, Chana Duangpitak, Chin Huat Lim
  • CHOKE AND EMI FILTER WITH THE SAME
    Publication number: 20150188509
    Abstract: A choke for an EMI filter is provided. The EMI filter includes a first filtering circuit and a second filtering circuit. The choke includes a magnetic core assembly and four winding coils. The magnetic core assembly includes a first magnetic core and a second magnetic core. The first winding coil and the second winding coil are directly wound around the first magnetic core. The third winding coil and the fourth winding coil are directly wound around the second magnetic core. The first winding coil is serially connected with a first positive path of the first filtering circuit. The second winding coil is serially connected with a second positive path of the second filtering circuit. The third winding coil is serially connected with a first negative path of the first filtering circuit. The fourth winding coil is serially connected with a second negative path of the second filtering circuit.
    Type: Application
    Filed: December 30, 2013
    Publication date: July 2, 2015
    Applicant: DET International Holding Limited
    Inventors: Adisak Paepoot, Chana Duangpitak, Chin Huat Lim