Patents by Inventor Cha Hwan Hwang

Cha Hwan Hwang 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).

  • Pouch type secondary battery having safety vent
    Patent number: 9768429
    Abstract: The present invention relates to a pouch type secondary battery. The pouch type secondary battery includes an electrode assembly, and a pouch type case in which the electrode assembly is accommodated, the pouch type case comprising a sealing part disposed on an edge thereof. The sealing part includes an inner sealing part forming a closed curve to protect the electrode assembly against the outside, and an outer sealing part defining a gas flow path between the inner and outer sealing parts to surround a peripheral portion of the inner sealing part, the outer sealing part having a safety vent.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: September 19, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Seung Hyun Chung, Sun Kyu Kim, Cha Hwan Hwang
  • POUCH TYPE SECONDARY BATTERY HAVING SAFETY VENT
    Publication number: 20150079436
    Abstract: The present invention relates to a pouch type secondary battery. The pouch type secondary battery includes an electrode assembly, and a pouch type case in which the electrode assembly is accommodated, the pouch type case comprising a sealing part disposed on an edge thereof. The sealing part includes an inner sealing part forming a closed curve to protect the electrode assembly against the outside, and an outer sealing part defining a gas flow path between the inner and outer sealing parts to surround a peripheral portion of the inner sealing part, the outer sealing part having a safety vent.
    Type: Application
    Filed: November 25, 2014
    Publication date: March 19, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Seung Hyun Chung, Sun Kyu Kim, Cha Hwan Hwang