Expired Canadian patentCanada
Micronised biodegradable particles, process for preparing them and the use thereof
CA 2017851 C · Owner: Boehringer Ingelheim International Gmbh · Inventors: Zierenberg, Bernd; Muacevic, Gojko
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to micronised biodegradable particles, processes for preparing them and the use thereof.
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 May 30, 1990 and granted November 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 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.
FiledMay 30, 1990
GrantedNovember 20, 2001
Term endedMay 30, 2010
Patent numberCA 2017851 C
Classification (IPC)A61K47/30 +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.