Expired Canadian patentCanada
Methods and apparatus for ultrasonic determination of red blood cell indices
CA 2497157 C · Owner: Key Technologies, Inc. · Inventors: Lipford, Keith; Corey, Scott; Reed, Samuel
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an apparatus and method for measuring the properties of blood using ultrasound. The present invention is particularly suitable for measuring HCT, HGB, MCV, RBC MCHC or TPC of blood.
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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 August 27, 2003 and granted November 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 27, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 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.
FiledAugust 27, 2003
GrantedNovember 5, 2013
Term endedAugust 27, 2023
Patent numberCA 2497157 C
Classification (IPC)G01N29/02 +2 more
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.