Expired Canadian patentCanada
Enriched phosphate ore hot compaction procss without preliminary mixing
CA 1231237 A · Owner: Atochem · Inventors: Roux, Jean-Marie; Miscevic, Michel; Mari, Alain
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
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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 12, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 12, 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.
FiledMay 23, 1984
GrantedJanuary 12, 1988
Term endedJanuary 12, 2005
Patent numberCA 1231237 A
Classification (IPC)C01B25/01
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.