Expired Canadian patentCanada
Preparation for intratracheobronchial administration
CA 2115444 C · Owner: Teijin Limited · Inventors: Makino, Yuji; Kobayashi, Hideki; Suzuki, Yoshiki
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A preparation for intratracheobronchial administration comprising a powder preparation for intratracheobronchial administration contained in a receptacle composed essentially of hydroxypropyl methyl cellulose.
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 11, 1993 and granted October 3, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 11, 1993
GrantedOctober 3, 2000
Term endedJune 11, 2013
Patent numberCA 2115444 C
Classification (IPC)A61K9/72 +2 more
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.