Expired Canadian patentCanada
Gas analyzer cuvettes
CA 2198889 C · Owner: Mace, Leslie E. · Inventors: Rich, David R.; Labuda, Lawrence L.; Apperson, Gerald R.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cuvettes which feature polymeric windows (142 144) for transmitting infrared , radiation. Methods for assembling the cuvettes and gas analyzers (20) in which the cuvettes can advantageously be employed.
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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 18, 1995 and granted July 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 18, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 18, 2017.
- 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 18, 1995
GrantedJuly 8, 2003
Term endedAugust 18, 2015
Patent numberCA 2198889 C
Classification (IPC)G01N21/05 +1 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.