Polymeric and/or monomeric dental composition comprising submicron inorganic filler
CA 1069239 A · Owner: Perdent G.M.B.H. · Inventors: Gross, Albert; Wollwage, Peter; Michl, Rudolf J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a dental material comprising a polymerisable monomer and/or a polymer suitable for dental purposes and a microfine inorganic filler which is present in a proportion of from 10 to 90% by weight of the material and has a particle size in the range from 10 to 400 m µ. Themechanical properties and polishing qualities of the dental material of this invention are better than materials not having the microfine inorganic filler described in this invention.
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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 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 1, 1997.
- 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
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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.