Thickener assembly and the like for vapour phase oxygen technology
CA 1114213 A · Owner: Kamyr, Inc. · Inventors: Prough, James R.; Sherman, Michael I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for treating cellulosic fiber material pulp. A washed brown stock storage tower is connected to a vapour phase oxygen reactor by a pulp thickening apparatus and other conventional components. In order to eliminate expensive accessory lifting or supporting structures, and in order to provide for rapid and efficient recycle of pulp from between the oxygen reactor and the storage tower, the thickening apparatus is mounted directly on top of the storage tower. Conventional dilution tanks and other assemblies for the recycle lines are also eliminated by this arrangement.
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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 December 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 1998.
- 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.