Optical measuring arrangement
CA 2256879 C · Owner: Heinonen, Risto J. · Inventors: Heinonen, Risto J.; Rahikkala, Arvo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an optical measuring arrangement for measuring particularly for liquid or gaseous substances (103). The measuring arrangement comprises at least one measuring head (104 106) operating on an optical, measuring band and a measuring head holder (100) comprising a hole (108, 112) for fastening and supporting the measuring head (104 106). In the, hole, the holder (100) comprises an end piece (110) through which the measurement is to be made. On the optical band of the measuring head (104 106),the end piece (110) is substantially transparent. Furthermore the end piece, (110) separates the measuring head from the substance (103) to be measured disposed in the measuring …
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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 December 21, 1998 and granted April 22, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 21, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 21, 2020.
- 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.