Dental material with alumoorganopolysiloxane filler
CA 2074128 C · Owner: Jaenes, Arno · Inventors: Jaenes, Arno; Rentsch, Harald; Mackert, Wilhelm
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a paste-like dental material consisting of a polymerizable binding agent and a finely divided filler that is based on special organopolysiloxane compounds that contain aluminum and which can be hardened in the presence of an initiator to form a highly polishable substance, and to different applications of the material for dental purposes.
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 July 17, 1992 and granted April 21, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 17, 2014.
- 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.