Low viscosity, highly concentrated surfactant suspension
CA 2020209 C · Owner: Weller, Eberhard · Inventors: Disse, Bernd; Weller, Eberhard; Becker, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Low viscosity, highly concentrated surfactant suspensions for replacement therapy in diseases of the respiratory tract are described. The suspensions are characterised in that they contain calcium and/or magnesium ions bound to the surfactant and unbound in the suspending agent, as well as containing sodium chloride in the suspending agent.
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 June 29, 1990 and granted September 12, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 29, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2012.
- 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.