Soap encapsulated bleach particles
CA 1267347 C · Owner: Unilever Plc · Inventors: Santos, Edward; Lang, David J.; Chun, Kil W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hard spherical bleaching particles are disclosed whose composition is an intimately dispersed agglomerated core mixture of an active halogen oxidizing material an inorganic diluent salt and a binder. The cores are coated with a mixture of from about 70-85% of a C16- C18 fatty acid soap and from about 15-30% of a C12- C14 fatty acid soap. A method for bleaching substrates and also a process for preparing the bleach particles are disclosed.
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 April 3, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 2007.
- 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.