Hydrophilic creams for delivery of therapeutic agents
CA 2096690 A1 · Owner: Genzyme Corporation · Inventors: Dow, Gordon J.; Rasmussen, James R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Invention, A viscous hydrophilic cream has been developed for the delivery of therapuetic agents to open wounds or mucous membranes. The hydrophilic cream that contains a purified seed glactomannan thickening agent is effective at delivering debriding enzymes to necrotic tissue and at maintaining the debriding enzymes on the wound site. Preferably, the seed galactomannan thickening agent is guaran having low protein and endotoxin levels. Preferably the debriding enzymes are a mixture of ananain and comosain two, pineapple stem-derived cationic cysteine proteases, that are effective in the debridement of necrotic tissue when delivered to burn eschar using the galactomannan …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 20, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 20, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 20, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.