Photostabilisation of molsidomine
CA 1232275 A · Owner: Cassella Aktiengesellschaft · Inventors: Voegele, Dieter; Laudenbach, Petra
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Photostabilised formulation of molsidomine a photostabil-, iser and, if appropriate further auxiliaries and additives, characterised in that the photostabiliser is a compound of the general formula I, (I), wherein Y denotes a hydroxyl group alkoxy having 1 or 2 C atoms, or .beta.-hydroxyethoxy and Z denotes a group of the formula or Y and Z together denote a structural element of the formula II or III, (II) , (III), in which the free oxygen valency is attached in the Y-position and the free carbon valency is attached in the Z-position the, compounds of formula I are surprising effective as photostabilizers for molsidomine and provide improved protection during its preparation, transport, …
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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 February 2, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 2, 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.