Dental impression tray with chemiluminescent light source
CA 2247111 A1 · Owner: The Minnesota Mining & Manufacturing Company · Inventors: Oxman, Joel D.; Kipke, Cary A.; Broyles, Bruce R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dental impression tray (10, 10a, 10b 10c) has wall portions (14, 14b, 14c, 15c) defining at least one channel (16 16b, 16c) for receiving a quantity of photocurable dental impression material (18). At least one of the wall portions (14, 14b, 14c, 15c) is located next to the chamber (20 20c) and is , made of a material that transmits electromagnetic actinic radiation. The tray (10, 10a, 10b, 10c) also includes a chamber (20 20c) for receiving a , chemiluminescent composition (22). Light emitted from the chemiluminescent composition (22) induces the curing of the impression material (18) in a uniform manner along the length of the channel (16 16b, 16c).
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 22, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 2019.
- 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.