Laundry additive particle having multiple surface coatings
CA 2250324 C · Owner: Surutzidis, Athanasios · Inventors: Leblanc, Michael Jude; Surutzidis, Athanasios
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A laundry additive particle having multiple coatings and compositions employing the particle are provided. The laundry additive particle comprises a porous carrier core material; a first encapsulating material coated on the core material to form an intermediate layer the first encapsulating material , comprising a glassy material derived from one or more at least partially watersoluble hydroxylic compounds having an anhydrous nonplasticized, glass , transition temperature Tg, of at least about 0 ~C; and a second encapsulating material coated on the intermediate layer to form an outer layer the second , encapsulating material comprising a carbohydrate material having an anhydrous …
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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
- Filed March 15, 1997 and granted September 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 2019.
- 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.