Method and device in manufacturing foamed urea formaldehyde material to be used as a sorbent
CA 1161021 A · Owner: Berglund (Jan) Produktions Ab · Inventors: Berglund, Jan-Olof V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method and a device for manufacturing foamed urea formaldehyde mamaterial to be used as a sorbent. To increase the density of the sorbent which in-, creases the possibilities to use the sorbent outdoors the hardened foamed urea formaldehyde material is comminuted with preserved moisture contents and is packed in hermetically sealed containers or bags.
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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 24, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 24, 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.
Timeline
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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.