Expired Canadian patentCanada
Sterile ophthalmological gel preparation applicable in drops and process for producing it
CA 2213836 C · Owner: Bellmann, Gunther · Inventors: Claus-Herz, Gudrun; Reimer Hevia, Cornelia; Bellmann, Gunther
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a sterile ophthalmic drop preparation especially a gel preparation, which comprises a two-phase carrier liquid or gel basis comprising a liquid aqueous and a liquid hydrophobic phase.
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
- Filed February 20, 1996 and granted December 25, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 20, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 20, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 20, 1996
GrantedDecember 25, 2001
Term endedFebruary 20, 2016
Patent numberCA 2213836 C
Classification (IPC)A61K9/06 +2 more
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.