Ultrasonic 2-phase flow apparatus and stratified level detector
CA 2316588 A1 · Owner: Daniel Industries, Inc. · Inventors: Letton, Winsor; Zanker, Klaus J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and related method for measuring the degree of stratified flow in a two-phase, flow is disclosed. Alternate embodiments include a single transducer level detector and a multiple, transducer level detector. Further these level detectors may be either , integrated into or used in conjunction with an ultrasonic flow meter or may be used in conjunction with , some other meter that determines speed of sound for the flowing gas.
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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 22, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 22, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 2022.
- 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.