Expired Canadian patentCanada
Method and shaped product formed from polymerizable dental material and fluorescing agent
CA 2459982 C · Owner: Lichkus, Andrew M. · Inventors: Sun, Benjamin; Lichkus, Andrew M.
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 provides a method of making a dental appliance by including fluorescing agent the surfaces of dental appliances are visually identifiable.
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 March 8, 2004 and granted June 14, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 8, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 8, 2004
GrantedJune 14, 2016
Term endedMarch 8, 2024
Patent numberCA 2459982 C
Classification (IPC)A61C7/08
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.