Expired Canadian patentCanada
Methods of demolding ophthalmic lenses
CA 2586407 C · Owner: Johnson & Johnson Vision Care, Inc. · Inventors: Leavitt, Richard W.; Watterson, Robert John, Jr.; Litwin, Mark A.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods of and apparatuses for demolding ophthalmic lenses are described which involve cooling the lens assembly and heating the lens mold assembly prior to demolding the ophthalmic lens.
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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
- Filed November 2, 2005 and granted April 1, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 2, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 2, 2005
GrantedApril 1, 2014
Term endedNovember 2, 2025
Patent numberCA 2586407 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.