Method in the bleaching of cellulose pulp
CA 1292887 C · Owner: Mo Och Domsjo Aktiebolag · Inventors: Ostman, Hakan E.; Gidlund, Claes-Goran
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method in the bleaching of cellulose pulp ABSTRACT, When bleaching cellulose pulp with strongly oxidative bleaching agents there is the need for an analysis method which is capable of quickly providing a correct analysis result without complicated manipulation of the bleaching liquor sample. The present invention satisfies this need and relates to a method for measuring the chemical content of bleaching liquor within the cellulose pulp industry in, which a sample of the bleaching liquor is brought together with one or more reagents, of which at least one is chemiluminescent so as to result in the emission of light and, the intensity of the light is determined as a measurement of the …
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
- Granted December 10, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 10, 2008.
- 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.