Multiple dose condensation aerosol devices and uses thereof
CA 2854037 C · Owner: Alexza Pharmaceuticals, Inc. · Inventors: Tom, Curtis; Kelly, Andrew J.G.; Shen, William W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Devices and methods of entraining a substance within an airflow are disclosed. Condensation aerosol delivery devices and methods of consistently producing multiple doses of a substance, such as a drug having high purity, high yield, characterized by a particle size distribution appropriate for pulmonary delivery, and which can be administered to a user in a single dose are also disclosed.
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 3, 2004 and granted June 23, 2020. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 3, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 3, 2026.
- 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.