Method and apparatus for detecting relative dynamic liquid surface activity
CA 1279206 C · Owner: Miller Brewing Company · Inventors: Cronan, Charles L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for continuous monitoring of the relative dynamic surface activity of a liquid in which the surface activity can be rapidly changing is disclosed. The liquid is flowed through an orifice at a constant volume flow rate to produe liquid drops. The time intervals between successive drops from the orifice are measured. Variations in the time intervals of pairs of two successive drops provide an indication of the volume of the second drop of each pair and thus provide an indication of the relative dynamic surface activity of the second drop. The measured time intervals are converted into electrical signals which are representative of the respective measured time intervals. …
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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 January 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 2008.
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Timeline
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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.