Expired Canadian patentCanada
Antineoplastic agent
CA 1105861 A · Owner: Grace (W.R.) & Co. · Inventors: Ranieri, Richard L.; Espenshade, Marlin A.; Calton, Gary J.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
of the Invention, Disclosed herein is a method of culturing Asperqillus terreus strain NRRL 11156 to produce a novel compound designated as quadrone and having the following structure:,
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 July 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 6, 1978
GrantedJuly 28, 1981
Term endedJuly 28, 1998
Patent numberCA 1105861 A
Classification (IPC)C12P17/06 +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.