Hydrostatic compression forming for wood and novel ligneous material therefrom
CA 2215876 A1 · Owner: Muraki, Toshio · Inventors: Arakawa, Tamio; Ito, Akihiko; Sakurai, Masako
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel forming method of wood is disclosed. In the method a primary wood of, which water content was adjusted in the range of 10-80wt% is brought into softened state, then said softened wood is compressed for forming with hydrostatic pressure by means of liquid as pressurizing medium and then said, compressed wood is treated with a fixation means of compressed state selected from either a step wherein a shaping jig or a mold is used or heating in a, particular temperature range is conducted for constraining volume relaxation of compressed wood, or cooling down below the softening point of said wood is conducted, or compact-packing together with hard particles into a vessel followed by …
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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
- Filed September 19, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 19, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 19, 2019.
- 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.