Antibiotic ll-e19020 zeta and ll-e19020 eta
CA 2077611 A1 · Owner: American Cyanamid Company · Inventors: Williams, David R.; Korshalla, Joseph D.; Carter, Guy Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
31,680-00, ANTIBIOTICS LL-E19020 ZETA AND LL-E19020 ETA ABSTRACT, The invention provides antibiotics designated LL-E 19020 Zeta and LL-E19020 Eta which are derived from the microorganism Streptomyces lydicus ssp. tanzanius NRRL 18036.
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 September 4, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 4, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 2014.
- 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.