Measurement of relative proportions of immiscible liquids mixtures
CA 1062496 A · Owner: International Standard Electric Corporation · Inventors: Black, Philip W.; Pitt, Gillies D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for measuring the proportion of a first liquid in a lower refractive index second liquid with which the first liquid is immiscible such, as oil in water. An unclad optical fiber having an index of refraction be-, tween those of the two liquids but at least equal to and not more than ten percent greater than that of the first liquid. A light energy source and detector are connected by the immersed fiber and the light energy transmission measured to determine liquid proportions. -1-
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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
- Granted September 18, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 18, 1996.
- 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.