Process for making a stable pharmaceutical preparation of prostaglandin e compounds, and/or 15r thereof
CA 1256029 A · Owner: Chugai Seiyaku Kabushiki Kaisha · Inventors: Ogasawara, Toshichika; Igusa, Kazuo; Miwa, Kohtaro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A process for making a stable pharmaceutical preparation of prostaglandin E compounds and/or 15R forms thereof is disclosed. Prostaglandin E compounds and 15R forms thereof are known to have useful pharmacological actions even if they are used in a vary small amounts. However they are, extremely unstable and, therefore considerably difficult in, application for routine clinical purposes. In order to remove this difficulty prostaglandin E, compounds and 15R forms thereof are formulated into a stable preparation by filling a hard capsule with a solution or a suspension thereof.
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 June 20, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 20, 2006.
- 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.