Bubble measurement cell
CA 2024972 A1 · Owner: Reynolds, Vaughan G. · Inventors: Reynolds, Vaughan G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bubble measurement cell is provided for measuring size distribution of gas bubbles in a liquid. The bubble measurement cell is adapted for insertion in a flotation column having a transparent, vertically-oriented, bubble-viewing window. The bubble measurement cell includes an antechamber, for placement adjacent the window in the flotation column, the antechamber having a transparent rear face. The transparent bubbleviewing window and the transparent rear face allow light to enter in sufficient quantity to illuminate the bubbles enabling photographic imaging thereof. A forward downwardly-pointing deflection wedge, deflects upwardly-moving bubbles. A transparent viewing chamber is provided …
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 September 10, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2012.
- 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.