Method of improving indoor air quality by thermally inactivating fungi on building surfaces
CA 2242399 C · Owner: Nielsen, Klaus · Inventors: Nielsen, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of improving the indoor air quality in a building comprising at least partially inactivating fungal mycelia and spores associated with a building material surface by applying onto the surface thermal energy initially contained in water vapour at a pressure exceeding 1 bar in an amount which is , sufficient to at least partially inactivate said fungal mycelia and spores but essentially without causing damages to the surface material.
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 February 7, 1997 and granted May 1, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 7, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 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
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.