Automated inspection of tinted ophthalmic parts
CA 2768053 C · Owner: Johnson & Johnson Vision Care, Inc. · Inventors: Edwards, Russell J.; Hall, Gary S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods, systems and apparatuses for inspecting tinted ophthalmic parts. An image of the ophthalmic part is captured at least one colorant being present , in a portion of the image. A reference image of a standard ophthalmic part is captured at , least one , colorant being present in a portion of the reference image. The intensities of the two , images are compared to determine whether the first image contains defects.
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 November 13, 2003 and granted January 14, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 13, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2025.
- 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.