Chemical signal-impermeable mask
CA 2229509 C · Owner: Kurnik, Ronald T. · Inventors: Tamada, Janet; Tierney, Michael; Kurnik, Ronald T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chemical signal-impermeable mask (1) is positioned in the electrolyte flow such that the mask is between a source of chemical signal and a working electrode (4) which senses the chemical signal transported from the source (e.g. by diffusion). The configuration of the mask is such that the mask prevents substantially all chemical signal transport from the chemical signal source/having a radial vector component relative to a plane of the mask/and the catalytic face of the working electrode thus allowing primarily only , chemical signal transport that is substantially perpendicular to the place of the mask and the catalytic surface (6) of the working electrode. By reducing or …
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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 July 16, 1996 and granted October 9, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 16, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 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.