Apparatus for steam injection pressing
CA 2022020 C · Owner: Jansky, John · Inventors: Jansky, John; Stofko, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Particle board hard board, wafer board, plywood, and the like are formed by vapor injection pressing using thin plates through which steam is injected into the product under consolidation, the thin plates lying adjacent the press platens. For closed steam pressing, the plate is provided with a peripheral seal which is inflatable to seal the cavity of the press using either the same steam which is injected into the product, or a second source of steam or other gas at a higher pressure.
Read the whole patent
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
- Filed July 26, 1990 and granted August 24, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 2012.
- 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.