Aerator device
CA 2100638 C · Owner: Leiponen, Matti Olavi · Inventors: Leiponen, Matti Olavi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an aerator device having a stator installed coaxially with a rotor. The stator is comprised of a plurality of flow chutes extending outwardly from the stator frame. The flow channel has a first portion that is closed at the top, and a second portion that is open at the top. The second open portion is a flow chute of a length which is advantageously at least 30% of the total length of the flow channel, thereby improving the aeration of the fluid being aerated.
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 July 15, 1993 and granted February 22, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 15, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 2015.
- 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.