Method of bleaching wood
CA 2534479 C · Owner: Usnr Kockums Cancar Holdings Ulc · Inventors: Waters, Carla; Spinola, Fred; Stevens, John R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for removing, reducing and/or lightening the dis-coloration of wood caused by blue-stain fungi in a workpiece using a kiln having a humidification system wherein the method includes placing a workpiece for drying in a kiln integrating a bleaching agent into the humidification system in the kiln so that moisture from the humidification system entering the kiln contains the bleaching agent commencing drying of the workpiece in the kiln and injecting moisture from the humidification system into the kiln so that the moisture contacts the workpiece.
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 January 30, 2006 and granted February 17, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 30, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.