Wood preservative
CA 1078104 A · Owner: Desowag-Bayer Holzschutz G.M.B.H. · Inventors: Koddebusch, Hubert; Cymorek, Siegfried; Metzner, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An agent for preserving wood and wood materials characterized in that it consists of 0.5 to 7 % by weight of a mixture of (a) at least one insecticidal alkoxyphenyl - N alkylcarbamate and/or alkyphenyl - N - alkylcarbamate soluble in a non readily volatilizable or oleaginous organic solvent having a vaporization factor above 35 and a flash-point above 30°C, and (b) at least one insecticidal halogenated or halogenfree, thio- or thionophosphoric acid ester or thionophosphonic acid ester, or a mixture thereof, soluble in a non readily volatilizable or oleaginous organic solvent having a vaporization factor above 35 and a flash-point above 30°C said esters having, the general formula : wherein …
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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 May 27, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 27, 1997.
- 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.