Dental restoration shading
CA 1262646 C · Owner: Blair, John J. · Inventors: Blair, John J.; Shue, Roger C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A new type of dental prosthetic facing is disclosed. The dental prosthetic facing is provided with an outer shader layer, an intermediate at least substantially uncolored trans-, lucent layer, and an opaque substructure. The opaque substructure may be a metal support with a surface opaquing agent in one species. The dental restoration may be prepared by removably mounting intermediate uncolored translucent layer that is a crown on the opaque substructure that is a dental mount. The dental mount being matched to an opaque dental cement that will mount the finished shaded dental crown.
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 November 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 7, 2006.
- 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.