Inventor
YAN CHENG F
US6 patents
⚠️ This page may combine multiple inventors who share the name “YAN CHENG F”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MINNESOTA MINING & MFG
4 patentsUS4954318ASep 4, 1990
Optical sensor
MINNESOTA MINING & MFG87 citations95
US4919891AApr 24, 1990
Sensor with overcoating and process for making same
MINNESOTA MINING & MFG90 citations95
US4849172AJul 18, 1989
Optical sensor
MINNESOTA MINING & MFG93 citations95
US5075127ADec 24, 1991
Sensor with overcoating and process for making same
MINNESOTA MINING & MFG20 citations81