Monolithic polymer composition having a releasing material
CA 2344188 C · Owner: Capitol Specialty Plastics, Inc. · Inventors: Hekal, Ihab M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a monolithic composition comprising at least the following components: a water-insoluble thermoplastic polymer; a releasing material composed of a particle which releases a liquid, gas or vapor functional substance to surrounding atmosphere, is contained in an amount of at least about 10% by weight of the polymer and is located in an interior of the composition; and a channeling agent which is immiscible with the polymer and acts as a transmission bridge between an exterior of the polymer and the interiorly located releasing material, wherein the releasing material has an affinity with the channeling agent greater than an affinity with the polymer, wherein the …
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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 September 17, 1999 and granted February 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 17, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 2021.
- 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.