Polycyclic ether antibiotics
CA 1236414 A · Owner: Pfizer Corporation · Inventors: Ruddock, John C.; Cullen, Walter P.; Maeda, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A new acidic polycyclic ether antibiotic UK-58,852 has the formula:, wherein R and R1 are both hydrogen and can be prepared by the, submerged aerobic propogation in aqueous nutrient media of Actinomadura sp. ATCC 39697. The antibiotic and its cationic salts are active against a variety of microorganisms and are effective in controlling coccidiosis, enteritis swine dysentery, and theileriosis as well as being effective in promotion of growth and/or improving efficiency of feed utilisatiion in swine and ruminants. Two minor components,wherein R is H and R1 is CH3 and wherein R and R1 are both CH3,have also been isolated from the fermentation.
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 May 10, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 10, 2005.
- 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.