Fire stopping apparatus
CA 1333481 C · Owner: Yamini, Khashayar · Inventors: Yamini, Khashayar; Bailey, Paul Rex
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fire stopping apparatus includes a metal casing having two side walls with co-extensive openings and an annular outer wall extending between the side walls outwardly from the openings, forming an inwardly open annular channel. The casing has mounts for connecting the apparatus to a building structure. There is an intumescent material within the channel. A resilient gasket extends from the casing and has an annular inner wall extending inwardly beyond the intumescent material.
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
- Granted December 13, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 13, 2011.
- 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.