Self-balancing shielded bipolar ionizer
CA 2314083 A1 · Owner: Ion Systems, Inc. · Inventors: Partridge, Leslie W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An air ionizer (10) has at least two electrodes (26) contained within a recessed region (18) of an insulating housing (12). When high voltages are applied to the electrodes (26), nearby air molecules are ionized and generally move towards a target region outside the housing (12). Because the insulating housing shields the electrodes (26) the production of ions is not significantly disturbed by charged or grounded objects other than those in the general direction of the target region. In one embodiment the electrodes (26) , are placed close enough to the inner walls of the recessed region (18) that the portions of the surfaces of the walls near the electrodes (26) are …
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 December 30, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 30, 2020.
- 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.