Laundry compositions
CA 1194654 A · Owner: The Procter & Gamble Company · Inventors: Bragg, Charles D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Laundry bleaching and detergent compositions comprising a peroxygen bleaching agent and a catalyst system therefor the catalyst system comprising a heavy metal cation of defined bleach catalytic activity, particularly copper iron or manganese cations, an auxiliary metal cation having little or no bleach catalytic activity particularly, zinc or aluminium cations and a sequestrant having defined, stability constants for the catalytic and auxiliary metal cations, particularly ethylenediaminetetraacetic acid ethylenediaminetetra(methylenephosphonic acid) and watersoluble salts thereof. The laundry bleaching and detergent compositions deliver improved bleach performance parti-, cularly at medium …
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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, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 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.