Treatment of dental amalgam alloy with hydrochloric acid solution of cupric chloride
CA 1058024 A · Owner: Pennwalt Corporation · Inventors: Burns, Charles F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is provided for tabletting spherical dental amalgam alloy. The process comprises treating the particles of spherical alloy by contacting them with a hydrochloric acid solution of cupric chloride separating the acidic cupric chloride solution from the spherical alloy particles, washing the spherical alloy particles with water drying the, spherical alloy particles to remove residual water and then compacting the treated spherical alloy particles into a solid form such as a tablet.
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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 July 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 10, 1996.
- 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.