Absorbable pharmaceutical compositions based on poly(alkylene oxalates)
CA 1100042 A · Owner: Ethicon, Inc. · Inventors: Jamiolkowski, Dennis D.; Shalaby, Shalaby W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Absorbable polymers derived from alkylene oxalates are formulated with drugs and introduced into the body to provide a slow, sustained release of the drug over an extended period of time in accordance with the rate of absorption of the polymer. Polymers of alkylene oxalates, particularly wherein the alkylene moiety is C3 to C16, are biodegradable in animal tissue and absorb with minimal adverse tissue reaction.
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
- Granted April 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 1998.
- 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.