Method of dispensing vapour to the air in a room and an apparatus for carrying out the method
CA 1262949 C · Owner: Clean-Tex A/S · Inventors: Kaae, Svend; Madsen, Jens
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
By a method of dispensing vapour preferably perfumed, vapour, to the air in a room from a vapour dispensing substance, vapour is dispensed by means of an electrically controlled control device for controlling the vapour dispensation of the vapour dispensing substance, and an electrical circuit for controlling the current supply to the control device. By the fact that the electric circuit is supplying a time controlled, gradually increasing current supply to the control device in time periods with intermediate periods of no current supply to the control device is achieved that the concentration of the vapour dispensed is kept at a constant level, until the vapour dispensation substance has …
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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
- Granted November 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 14, 2006.
- 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.