Patents by Inventor Chang Eun Yeo

Chang Eun Yeo 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).

  • Portable auxiliary power-source device for a vehicle
    Patent number: 8643324
    Abstract: The present invention relates to a portable auxiliary power-source device for a vehicle, and more specifically to a portable auxiliary power-source device which incorporates a rechargeable battery and is able to temporarily charge while the vehicle's battery is discharging, and is able to effect ignition of the vehicle and charge portable, personal digital devices.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: February 4, 2014
    Assignee: N Navi Solution
    Inventor: Chang Eun Yeo
  • PORTABLE AUXILIARY POWER-SOURCE DEVICE FOR A VEHICLE
    Publication number: 20110279089
    Abstract: The present invention relates to a portable auxiliary power-source device for a vehicle, and more specifically to a portable auxiliary power-source device which incorporates a rechargeable battery and is able to temporarily charge while the vehicle's battery is discharging, and is able to effect ignition of the vehicle and charge portable, personal digital devices.
    Type: Application
    Filed: February 1, 2010
    Publication date: November 17, 2011
    Applicant: N NAVI SOLUTION
    Inventor: Chang Eun Yeo