Carbon-containing odor controlling compositions
CA 2071834 C · Owner: Karapasha, Nancy · Inventors: Karapasha, Nancy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compositions comprise carbon particles combined with white odor-controlling agents by means of binders. The preferred particle form of the compositions is substantially lighter in color than the original carbon, and the resulting particles are preferred for use in the manufacture of catamenials, diapers bandages, and the, like. Particles comprising carbon and zeolites are not only desirably lighter in color, but also control a broad spectrum of malodors associated with body fluids.
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
- Filed January 31, 1991 and granted September 20, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 31, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 2013.
- 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.