Process and device for producing fillings in teeth
CA 1234652 A · Owner: Degussa Aktiengesellschaft · Inventors: Beyer, Hans-Hermann; Eckert, Karlheinz; Eiermann, Kurt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For producing fillings in teeth by means of plug gold the cavity is filled with gold powder, which is then mechanically compacted. The sensitivity of this process to moisture can be avoided by using a paste of platelet-like gold powder with a plastic organic binder, which liquefies at 20 to 45°C and when the, mechanical compaction is brought about under the action of ultrasound.
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 April 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 5, 2005.
- 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.