Won Gyun Choe

3 Patents

• US116948272023

  Light-colored Magnetic Particles Having Improved Durability and Chemical Resistance

  Korea Minting, Security Printing & ID Card Operating Corp.

  0 cites
• US115907922023

  Security Device Using Light Reflection Property

  KOREA MINTING, SECURITY PRINTING & ID CARD OPERATING Corp.

  0 cites
• US115416802023

  Photonic Crystal Film, Method for Manufacturing Same, and Anti-forgery Article Comprising Same

  Korea Minting, Security Printing & ID Card Operating Corp.

  0 cites