Expired Canadian patentCanada
Method of cast molding toric contact lenses
CA 2181982 C · Owner: Apollonio, Attilio · Inventors: Erickson, Paul M.; Apollonio, Attilio
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of cast molding toric contact lenses having a toric posterior surface permits aligning the mold sections at multiple rotational positions.
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 January 24, 1995 and granted July 6, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 24, 1995
GrantedJuly 6, 1999
Term endedJanuary 24, 2015
Patent numberCA 2181982 C
Classification (IPC)B29D11/00 +1 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.