Bioadhesive carboxylic polymer composition and method relating thereto
CA 2043384 A1 · Owner: Sehm, Eugene J. · Inventors: Masler, William F.; Hsu, Chin C.; Sehm, Eugene J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates generally to polymeric based compositions, particularly adhesive and most particularly bioadhesive polymeric compositions capable of, adhering to a substrate as a lubricant slow release medium, or, the like. More particularly the polymeric adhesive composition, of the present invention is directed to acrylic-type polymer and copolymer compositions polymerized in a substantially nonaqueous medium to provide a material having an average particle size (without mechanical grinding) less than about 10 microns. pa9044.khk
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 28, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2013.
- 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.