Expired Canadian patentCanada
Pf 1022 substance, method of producing same and anthelmintic composition containing same
CA 2009508 C · Owner: Yaguchi, Takashi · Inventors: Takagi, Masayuki; Miyadoh, Shinji; Sasaki, Toru
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 novel substance having anthelmintic activity the PF 1022 substance, which is produced by cultivating a fungal strain capable of producing said substance and recovering said substance from the culture.
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 February 7, 1990 and granted July 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 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.
FiledFebruary 7, 1990
GrantedJuly 3, 2001
Term endedFebruary 7, 2010
Patent numberCA 2009508 C
Classification (IPC)C12P17/14 +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.