Method for determining physical properties
CA 1324432 C · Owner: The British Petroleum Company P.L.C. · Inventors: Belchamber, Ronald Malcolm; Collins, Michael Patrick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for the determination of the value of a property of the material within a mill during the comminution of solid material within the mill comprises the steps:, (a) detecting the noise intended of milling by means of an analogue electrical signal, the intensity of which is proportional to the intensity of the noise in the audio frequency range converting the analogue signal to a digital signal (c) passing the digital signal through a digital band-pass filter to select at least two frequency bands and, (d) analysing the data from the bands by means of a multivariate statistical technique to obtain the value of the property. The method is particularly suitable for determine the particle …
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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 November 16, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 16, 2010.
- 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.