6-KETO AND 5-HEMIKETAL-PGF IN1.alpha. XX, METHYL ESTERS
CA 1160628 A · Owner: Upjohn Company (The) · Inventors: Lincoln, Frank H.; Kelly, Robert C.; Axen, Udo F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Prostaglandin (PG1) derivatives having (1) a 9-deoxy- 6,9-epoxy feature as well as 5-iodo,5,6-didehydro or 6-hemi-, ketal or (2) a 6-keto feature are disclosed; including processes for preparing them and the appropriate intermediates; said derivatives having pharmacological activity. Typical 6-keto and 6-hemiketal compounds are represented respectively, by the formulae:, and,
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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 January 17, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 17, 2001.
- 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.