Method for preserving wood against undesirable reactions caused by microorganisms
CA 2136984 A1 · Owner: Silenius, Petri · Inventors: Ritschkoff, Anne-Christine; Viikari, Liisa; Silenius, Petri
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is related to a method for preserving wood against undesirable reactions caused by microorganisms. The invention also concerns wood preserved against molds blue-stain fungi, and rot fungi. According to the method the wood being preserved, is treated with a substance capable of inhibiting the growth of microorganisms, whereby said substance is penetrated into the wood at least essentially deeper than superficially. According to the invention, such a substance used in the method is a complexing agent, e.g. EDTA, which is capable of binding transition metals contained in the wood, whereby the complexing agent is first impregnated into the wood in a water-based …
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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 March 31, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 31, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 31, 2016.
- 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.