Gel-filled blood pressure transducer
CA 2005297 C · Owner: Nicholson, Warren B. · Inventors: Nicholson, Warren B.; Pfouts, Mark D.; Frank, Thomas P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reusable pressure transducer for use with a detachable dome. The pressure transducer includes a body having a recess with an opening covered by a flexible diaphragm. The body has a hole opposite the flexible diaphragm and a sensor placed over the hole. A dielectric gel fills the recess to transmit to the sensor variations in pressure imparted to the diaphragm.
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 12, 1989 and granted July 6, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 12, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2011.
- 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.