Indoor type skiing ground, and method and controller for indoor type skiing ground
CA 2237692 C · Owner: Shimazaki, Masanori · Inventors: Ogata, Jyunji; Ohsone, Masanori; Tomioka, Masahiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an indoor type skiing ground having a ski slope formed by sprinkling artificial snow to a predetermined thickness on a slope inside a building a predetermined, height range from the surface of the artificial snow is defined as a low temperature region, while an ordinary temperature region is defined above the low temperature region, and cold air ports for blowing cold air into the building are formed in a side wall of the building so as to be located in the low temperature region while, air outlets are formed so as to be located above the cold air ports.
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 May 14, 1998 and granted April 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2020.
- 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.