Hye Jung Cho, Young Soo Joung, Hyuk Chang, US Patent: US872228
Note: Registered in Standards - IEC TC 105 WG#10;
International Electrochemical Commission (IEC), Technical Committee No.105 (TC105) – Fuel cell Technologies, Working Group #10, Portable Fuel Cell Appliance – Interchangeability.Aspects of the present invention provide a power unit and/or a cartridge of a fuel cell system, which may secure against fuel leakage, may ensure operational safety, and may ensure coupling safety.
http://www.freepatentsonline.com/EP2408050.pdf