Biodegradable phase separated segmented multi block co-polymers
CA 2493375 C · Owner: Meyboom, Ronald · Inventors: Hissink, Catharina Everdina; Flipsen, Theodorus Adrianus Cornelius; Meyboom, Ronald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed to biodegradable thermoplastic, phase separated , segmented multi-block copolymers. The copolymers of the present invention find use in various biomedical applications as well as in pharmaceutical applications. According to the invention a biodegradable phase separated , copolymer is provided comprising segments of a soft prepolymer (A) having a Tg lower than 37~C; and segments of a hard prepolymer (B) having a phase transition temperature Tm of 40-100~C.
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 July 16, 2003 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 16, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 2025.
- 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.