Device for dispensing a volatile active ingredient
CA 2220229 C · Owner: Savage, Frank W. · Inventors: Dancs, Imre J.; Savage, Frank W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dispensing device for dispensing a volatile active ingredient from an airtransmitting substrate that forms a part of a refill assembly. The dispensing device includes a housing with an intake vent and an exit vent and an air flow path extending between them. Refill assembly support means are provided for removably supporting the refill assembly with its substrate located in the air flow path. Battery-powered fan means are provided for propelling air from the intake vent through the substrate and out the exit vent. A battery holder holds a fan battery in such a manner that a refill assembly not fully inserted within the refill assembly support means blocks the placement of a battery …
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 May 8, 1996 and granted July 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 8, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 8, 2018.
- 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.