Inventor
CHENG YU-LING
US19 patents
⚠️ This page may combine multiple inventors who share the name “CHENG YU-LING”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ALZA CORP
7 patentsUS4820720AApr 11, 1989
Transdermal drug composition with dual permeation enhancers
ALZA CORP159 citations97
US4788062ANov 29, 1988
Transdermal administration of progesterone, estradiol esters, and mixtures thereof
ALZA CORP231 citations97
US4746515AMay 24, 1988
Skin permeation enhancer compositions using glycerol monolaurate
ALZA CORP203 citations97
US4940586AJul 10, 1990
Skin permeation enhancer compositions using sucrose esters
ALZA CORP65 citations95
US4865848ASep 12, 1989
Skin permeation enhancer compositions using sucrose esters
ALZA CORP109 citations95
US4764379AAug 16, 1988
Transdermal drug delivery device with dual permeation enhancers
ALZA CORP69 citations95
US4900555AFeb 13, 1990
Skin permeation enhancer compositions using sucrose esters
ALZA CORP51 citations92