Inventor
Frank Hay Kong Shum
Inventor
North Point, HK
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 purposes30%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations30%
C07DHeterocyclic compounds20%
B01DSeparation10%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry10%
PatentTitleYear
6,780,866'Analgesic composition and method'20046,562,968'Method of purifying tetrodotoxin'20036,559,154'Composition of sodium channel blocking compound'20036,552,191'Method of extracting tetrodotoxin'20036,478,966'System for extracting tetrodotoxin'20026,407,088'Method of analgesia'2002Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2002–2003Patents assigned to NANNING MAPLE LEAF PHARMACEUTI (3)· patent assignee history
2002–2004Patents assigned to WEX MEDICAL INSTRUMENTATION CO (3)· patent assignee history
2002–2004Based in North Point, HK· patent location history
2003Based in North Vancouver, CA· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NANNING MAPLE LEAF PHARMACEUTI | 3 | 2002–2003 |
| WEX MEDICAL INSTRUMENTATION CO | 3 | 2002–2004 |
Locations
| Location | Patents | Span |
|---|---|---|
| North Point, HK | 4 | 2002–2004 |
| North Vancouver, CA | 2 | 2003 |