Canadian application, no grantCanada
Bu-4641v, an antibacterial, antiviral and antitumor antibiotic
CA 2090097 A1 · Owner: Mamber, Stephen W. · Inventors: Oka, Masahisa; Mamber, Stephen W.; Sawada, Yosuke
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compound of the formula useful in treating cancer, and viral or bacterial infections.
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 22, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 22, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 22, 2015.
- 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 22, 1993
GrantedNo grant recorded
Term endedFebruary 22, 2013
Patent numberCA 2090097 A1
Classification (IPC)C12P7/38 +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.