Cooling fan apparatus for an automobile
CA 2049890 C · Owner: Sakane, Takaaki · Inventors: Hasebe, Yasuaki; Sakane, Takaaki; Hoshino, Yoshitake
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cooling fan apparatus has a cooling fan a fan, shroud and a protecting net. The protecting net comprises a bell mouth ring and a net portion. A bell mouth ring is disposed in front of the fan shroud through a predetermined clearance. The net portion comprises a plurality of rings and a radial grid which is disposed around the rings.
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 August 26, 1991 and granted April 17, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 26, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 2013.
- 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.