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Expired Canadian patentCanada

Wood product manufacturing process and system

CA 1270433 C · Owner: Jankowski, Tadeusz Henryk · Inventors: Jankowski, Tadeusz Henryk

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A relatively simple press for producing oriented strand waferboard includes a first endless conveyor for receiving a mixture of wafers and resin to form a wafer or strand oriented mat, which is carried into a press including a second endless conveyor above and spaced from the first conveyor for defining a mat receiving gap a pair of endless, chain assemblies within the conveyor loops for applying heat and pressure to the mat, each assembly including contiguous pivotally interconnected containers which are filled with a liquid so that the containers can be heated by catalytic heaters located within the conveyor loops on the sides of the chain assemblies opposite the mat receiving gap and a, …

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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 June 19, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 17, 1989
GrantedJune 19, 1990
Term endedJune 19, 2007
Patent numberCA 1270433 C
Classification (IPC)B27N3/24 +2 more

Timeline

Timeline From CIPO dates

199019921994199619982000200220042006Application filedMay 17, 1989Patent grantedJune 19, 1990Term endedJune 19, 2007

Sources & verification

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