Process for manufacturing groundwood pulp while maintaining a high and uniform moisture content in the wood in the grinding zone
CA 1159695 A · Owner: Mo Och Domsjo Aktiebolag · Inventors: Lindahl, Jonas A. I.; Johnsson, Gustaf E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
16-253, Case 1421, PROCESS FOR MANUFACTURING GROUNDWOOD PULP WHILE MAINTAINING A HIGH AND UNIFORM MOISTURE CONTENT IN THE WOOD IN THE GRINDING ZONE, ABSTRACT OF THE DISCLOSURE A process is provided for manufacturing groundwood pulp of uniform quality by maintaining a high and uniform moisture content in the wood in the grinding zone which comprises grinding debarked wood logs or wood chips in a closed pocket grinder under atmospheric or superatmospheric pressure while applying shower water both to the free surfaces of the grindstone and to the grinding zone where the logs or chips are in contact with the grindstone such as by spraying, the water at the end portions of the logs or chip mass …
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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 3, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 2001.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.