Fluid valve
CA 2240771 C · Owner: Ashton, Craig · Inventors: Ashton, Craig
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluid valve is provided including a housing having an entrance to permit flow of fluid into the housing and an exit to permit said fluid to flow out of the housing. A first member is disposed in the housing and defines at least one first passageway. A second member is disposed in the housing and defines at least one second passageway. The first member and the second member are disposed in the housing operatively between the entrance and the exit so that the at least one first passageway and the at least one second passageway are selectively positionable with respect to each other to allow passage of the fluid through the at least one first passageway and the at least one second passageway …
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 June 16, 1998 and granted June 18, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 16, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 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.