Biocompatible monomer and polymer compositions
CA 2120304 A1 · Owner: Closure Medical Corporation · Inventors: Clark, Jeffrey G.; Leung, Jeffrey C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A biocompatible monomer composition contains (A) at least one monomer of the formula:, CHR=CXY wherein X and Y are each strong electron withdrawing groups, and R is H or, provided that X and Y are both cyano groups, a C1-C4 alkyl group; and (B) an effective amount of at least one biocompatible agent effective to reduce active formaldehyde concentration levels preferably a formaldehyde scavenger compound. The monomer is preferably an alpha-cyanoacrylate. The formaldehyde scavenger compound may be in microencapsulated or nonmicroencapsulated form. The composition can be applied to a variety of materials and is particularly suitable as in vivo tissue adhesive. A method of joining together n …
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 March 30, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 30, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 30, 2016.
- 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.