A short dwell coater apparatus
CA 2122611 C · Owner: Chance, James L. · Inventors: Chance, James L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A short dwell coater apparatus (10) is disclosed for the application of coating material (C) to a web (W) which is supported by a backing member (12). The apparatus (10) includes a housing (14) which is disposed closely adjacent to the backing member (12) such that the web (W) moves between the housing (14) and the backing member (12). The housing (14) defines an application zone (16) which is connected to a pressurized source (P) of the coating material (C). The application zone (16) has an open face (18) towards the web (W). A blade (20) is adjustably secured to the housing (14) and extends from the housing (14) towards the web (W). The blade (20) defines a downstream extremity (22) of …
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 November 13, 1992 and granted February 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2014.
- 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.