Calcination of basic ferric sulphates
CA 1071412 A · Owner: Monash University · Inventors: Lawson, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is described for the calcination of basic ferric sulphates in which the formation of acidic mist is avoided. The novel procedure involves heating basic ferric sulphate in two stages, the first stage being conducted at a relatively low temperature range to effect dehydration and the second stage being conducted at a higher temperature range to decompose the product of the first stage.
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 February 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 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
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.