Thermoset-thermoplastic molded article and method for extra-oral dental restoration
CA 1279164 C · Owner: Bryan, Thomas T. · Inventors: Bryan, Thomas T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For use in making dental restorations a model, is prepared by taking an intra-oral impression and molding in the impression a replica model (30) made from a thermosetting resin (33) and a thermoplastic resin (32). The thermosetting resin provides a tough, heat- and abrasionresistant surface. Heat from the molten thermoplastic resin accelerates the curing of the thermosetting resin.
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
- Granted January 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 2008.
- 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.