Method of processing waste cement kiln dust to make a soil treatment composition
CA 1187305 A · Owner: Galli, Ramon · Inventors: Kachinski, Joseph L. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The processing for reconditioning of waste cement kiln dust to reuse the valuable metal salts thereof as a combination soil conditioner liming, agent and potassium-enriched fertilizing material wherein water is admixed with the waste dust in a carbon dioxide-containing atmosphere to primarily reduce the akalinity of the dust and to secondarily granulate the mixture.
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 May 21, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 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.