Inventor
Richard Won
Inventor
Palo Alto, CA, US
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A61Kprimary
A61KPreparations for medical, dental or toiletry purposes31%
A61QSpecific use of cosmetics or similar toiletry preparations25%
C08JWorking-up13%
A01NPreservation of bodies of humans or animals or plants or parts thereof6%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry6%
C02FTreatment of water, waste water, sewage, or sludge6%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
PatentTitleYear
5,955,109'Methods and compositions for topical delivery of retinoic acid'19995,871,722'Ionic beads useful for controlled release and adsorption'19995,840,293'Ionic beads for controlled release and adsorption'19985,145,675'Two step method for preparation of controlled release formulations'19924,690,825'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'19874,307,201'Highly adsorptive macroporous polymers'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981Patents assigned to DIAMOND SHAMROCK CORP (1)· patent assignee history
1981–1999Based in Palo Alto, CA, US· patent location history
1987–1999Patents assigned to ADVANCED POLYMER SYSTEMS INC (5)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ADVANCED POLYMER SYSTEMS INC | 5 | 1987–1999 |
| DIAMOND SHAMROCK CORP | 1 | 1981 |
Locations
| Location | Patents | Span |
|---|---|---|
| Palo Alto, California, US | 6 | 1981–1999 |