Microcapsules comprising functionalised polyalkylcyanoacrylates
CA 2400906 A1 · Owner: Schering Aktiengesellschaft · Inventors: Debus, Nils; Hauff, Peter; Sydow, Sabine
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to gas-filled microcapsules that consist of functionalized polyalkylcyanoacrylates that are produced by copolymerization of one or more alkylcyanoacrylates with a functional monomer and/or by partial side-chain hydrolysis of a polyalkylcyanoacrylate as well as a process for , the production of gas-filled microcapsules and their use for ultrasound diagnosis.
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 13, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 13, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 2023.
- 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.