Supply assembly for a spray gun comprising pre-packaged material
CA 2524359 C · Owner: 3M Innovative Properties Company · Inventors: Schwartz, Thomas W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A material supply assembly for use with a spraying device which material , supply assembly includes a housing (12) of stiff material comprising a side wall (13) having a top end (14); and a pre-filled container (19) comprising a stiff annular lip (22) adapted to be positioned along the top end (14) of the side wall (13), and a flexible portion (20) fixed to the annular lip (22) and adapted to extend into the cavity of the housing (12) when the annular lip (22) is positioned along the top end (14) of the side wall (13). The flexible portion (20) contains a quantity of material. A membrane (26) extends across and is sealed to the annular lip (22) to retain the material. The material …
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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 April 9, 2004 and granted May 28, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 9, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 2026.
- 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.