Pilocarpic acid derivatives
CA 1235416 A · Owner: Bundgaard, Hans · Inventors: Bundgaard, Hans; Mikkelson, Thomas J.; Falch, Erik
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
I, in which, for example, R1 is alkyloxy phenyloxy, substituted-, phenyloxy, benzyloxy etc. and R2 is hydrogen acetyl, propionyl, benzoyl and the like and salts thereof, are useful, in treatment of glaucoma by ophthalmic administration. They will penetrate the cornea to an extent greater than pilocarpine itself, and convert in situ to form pilocarpine.
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 April 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 19, 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.