Porous wick for liquid vaporizers
CA 2425304 A1 · Owner: He, Mengtao Pete · Inventors: Park, Debra; Triplett, Carl; Wolpert, Christopher J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to the use of porous materials for transporting , liquids from a reservoir (104) in a vapor dispensing device (100) which addresses many of the shortcomings of the prior art by selecting pore sizes , and void volume ratios of the various wicking materials to fall within an effective range to obtain effective control of liquid delivery. For example in accordance various aspects of the present invention a porous polymeric , wick (102) is comprised of various polymeric materials having pore sizes less than about 250 microns and void volume ratios from about 25 to about 60 %.
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 October 9, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 9, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2023.
- 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.