Calcium hypochlorite process
CA 1290135 C · Owner: Chemetics International Company Inc.-Compagnie Internationale Chemetics Inc. · Inventors: Fetissoff, Peter Eugene; Tam, Stanley Sou Yee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the production of calcium hyopchlorite from calcium hydroxide and chlorine in the presence of sodium hydroxide and dibasic calcium hypochlorite wherein the dibasic calcium hypochlorite is prepared from the calcium hypochlorite containing primary mother liquor and recycled evaporator mother liquor, and calcium hydroxide. The process provides improved quality calcium hypochlorite products and sodium chloride by-product. It also avoids the separation of co-crystallized calcium hypochlorite and sodium chloride and the precipitation and separation of calcium hydroxide as part of the recovery process.
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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 October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
- 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.