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Expired Canadian patentCanada

Process for the production of an optionally panel-like synthetic resin plastic pressure moulded body as well as an initial product for use in such a process

CA 1307089 C · Owner: Melcher, Gerhard · Inventors: Melcher, Gerhard

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

During the production of pressure moulded bodies a bonding agent that is a condensation resin with a solid resin content of at least 80% and a water content of at most 7%-wt preferably however, of at most 5%-wt is applied in liquid or brushable form to wood chips and/or wood fibres having a moisture content of at most 10%-wt, preferably however at most 8%-wt as, starting material (this condensation resin optionally containing additives such as pigments). The wood chips and/or fibres that have been so coated--optionally between cover layers of paper that has been impregnated with synthetic resin--are hot pressed together with the cover layers at, for example 70 bar as the, resin is …

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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 September 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 24, 1988
GrantedSeptember 8, 1992
Term endedSeptember 8, 2009
Patent numberCA 1307089 C
Classification (IPC)B27N3/06 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedOct 24, 1988Patent grantedSep 8, 1992Term endedSep 8, 2009

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.