Inventor
QIAN CHAO
CN13 patents
⚠️ This page may combine multiple inventors who share the name “QIAN CHAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NANJING TOPTO MAT CO LTD
5 patentsUS9938287B1Apr 10, 2018
Blue fluorescence dopant compound and organic electroluminescent device using the same
NANJING TOPTO MAT CO LTD6 citations71
US10155773B2Dec 18, 2018
Organic electroluminescent compound and organic electroluminescent device
NANJING TOPTO MAT CO LTD2 citations67
US10396290B2Aug 27, 2019
Spiro organic compounds, material comprising the same for organic electroluminescence devices, and organic electroluminescence device comprising the material
NANJING TOPTO MAT CO LTD0 citations39
US10396289B2Aug 27, 2019
Spiro organic compounds, material comprising the same for organic electroluminescence devices, and organic electroluminescence device comprising the material
NANJING TOPTO MAT CO LTD0 citations39
US10214489B2Feb 26, 2019
Spiro organic compounds
NANJING TOPTO MAT CO LTD0 citations39