Process for impregnating porous materials
CA 1317826 C · Owner: Alexearl Enterprises Limited · Inventors: Emery, Charles L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A new method for the impregnation of porous materials by solutions, especially solutions which impart desirable physical, electrical, chemical and other properties to the porous material, is disclosed. Microwave energy inductively heats the liquid moisture contained within the porous material for a prescribed time, in such a manner so as to rapidly convert the liquid moisture in the inner portion of the porous material to gaseous moisture. The gaseous moisture drives the remaining liquid moisture to the surface of the porous material. The porous material is quickly cooled and the desired solution applied to the surface of the porous material immersing or coating. The gaseous moisture …
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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 18, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 18, 2010.
- 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.