Inventor
WON RICHARD
US6 patents
⚠️ This page may combine multiple inventors who share the name “WON RICHARD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ADVANCED POLYMER SYSTEMS INC
5 patentsUS5145675ASep 8, 1992
Two step method for preparation of controlled release formulations
ADVANCED POLYMER SYSTEMS INC147 citations97
US4690825ASep 1, 1987
Method for delivering an active ingredient by controlled time release utilizing a novel delivery vehicle which can be prepared by a process utilizing the active ingredient as a porogen
ADVANCED POLYMER SYSTEMS INC256 citations97
US5955109ASep 21, 1999
Methods and compositions for topical delivery of retinoic acid
ADVANCED POLYMER SYSTEMS INC98 citations95
US5871722AFeb 16, 1999
Ionic beads useful for controlled release and adsorption
ADVANCED POLYMER SYSTEMS INC56 citations95
US5840293ANov 24, 1998
Ionic beads for controlled release and adsorption
ADVANCED POLYMER SYSTEMS INC40 citations91