Sheet for containing micronized powdered medicament
CA 2039655 C · Owner: Riker Laboratories, Inc. · Inventors: Calhoun, Clyde D.; Velasquez, David J.; Hodson, Peter D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sheet material comprising discrete depressions which are at least partially filled with micronized medicament and which are useful as or in a drug delivery device. This sheet material is useful in devices which provide for aerosolization of the medicament for delivery, to a patient by inhalation.
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 April 3, 1991 and granted October 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 3, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 3, 2013.
- 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.