Method of producing medium- to thin- film pressure and humidity sensors by flexographic printing
CA 2447740 C · Owner: Petersen, Michael · Inventors: Petersen, Michael; Sherstyuk, Mykola; Wilson, Allan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A means is described for making low-cost pressure and humidity sensors using flexographic printing methods carbon-resistive inks, and flexible substrates. Specifically described are low-cost sensors for measuring applied pressure and monitoring the position or orientation of moveable objects such as joints and the opening and closing of lids doors or windows. The invention can also be applied to the monitoring of humidity. A means of measuring atmospheric (environmental) pressure using a flexible bubble coated with flexographically- applied carbon-resistive ink is also described.
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 November 3, 2003 and granted March 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 3, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 3, 2025.
- 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.