Process for producing 13-substituted milbemycin derivatives
CA 1288426 C · Owner: Sankyo Company, Limited · Inventors: Kinoto, Takao; Sato, Kazuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Milbemycin derivatives having a halogen atom or an ester group at the 13-position are prepared by reducing the corresponding 13-substituted-5-ketomilbemycin derivatives. The milbemycin derivatives as prepared have superb insecticidal, acaricidal and anthelmintic activities.
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
- Granted September 3, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 3, 2008.
- 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.