Invertible aerosol valve
CA 2124652 C · Owner: Smith, Jeremy P. · Inventors: Smith, Jeremy P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aerosol valve has a body with a circular side wall extending down beyond the floor of the body to define a socket. Into this socket is frictionally engaged a symmetrical appendage having a circular upper end and a tailpiece at its lower end. The body is vertically partitioned into a primary product passage communicating from the tailpiece upward through an opening in the floor of the main valve. On the other side of the partition the lower end of the chamber is provided with a valve seat with an opening communicating with the primary passage. A side opening is formed through the appendage above the valve seat and a ball, is adapted to seat on the valve seat when the container is in …
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 30, 1994 and granted July 15, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 30, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 2016.
- 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.