YQ

Yifan Qian

TC Toppan Printing Co.: 2 patents #414 of 1,467Top 30%
Overall (All Time): #2,131,504 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7485023 Organic electroluminescent device having partition wall and a manufacturing method of the same by relief printing method Koji Takeshita, Takahisa Shimizu, Hironori Kawakami 2009-02-03
6339288 Circuit board for organic electroluminescent panel, method of manufacture, and electroluminescent panel Mamoru Ishizaki, Takeshi Itoi, Mizuhiro Tani, Takao Minato, Yuichi Ito +1 more 2002-01-15