Antiparasitic agent
CA 2021894 C · Owner: Maeda, Hiroshi · Inventors: Perry David Austen; Nishiyama, Satoshi; Kojiima, Yasuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An antibiotic compound of the formula:is an antiparasitic agent active against insect pests acari, free living nematodes and endo- and ectoparasites. It is prepared by fermentation using the microorganism Stereotomyces griseochromogenes ATCC 53928.
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 July 24, 1990 and granted September 17, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 24, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 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.
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.