Biologically active polymer products
CA 2268809 A1 · Owner: Fukagawa, Yasuo · Inventors: Miya, Akiko; Fukagawa, Yasuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bioactive polymer product comprising a polymer substrate and a bioactive compound portion immobilized through a covalent bond onto the polymer substrate. The bioactive compound portion such as an antibiotic, exhibits , selective bioactivity in such a state that it is covalently bonded to the polymer substrate. A bioactive polymer product comprising a polymer substrate and two or more bioactive compound portions bonded through a graft chain and a pendant chain to the polymer substrate.
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 October 15, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 2019.
- 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.