Polymerizable dental composition containing a mixture of fine particle size and large particle size fillers
CA 1189996 A · Owner: Zeneca Limited · Inventors: Roberts, Thomas A.; Ratcliffe, Maurice J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluid dental composition which comprises a liquid ethylenically unsaturated polymerisable material and a polymerisation catalyst therefor and a selected mixture of fine particle size and large particle size fillers and dispersing agent particularly for the former filler, the compositions having physical properties desirable as an amalgam potential replacement.
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 July 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2002.
- 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.