Inverted blade metering unit and method for blade-coating a material web
CA 2007132 C · Owner: Mannio, Aaron · Inventors: Koivukunnas, Pekka; Heikkinen, Jukka; Eskelinen, Juhani
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a blade coater and a method for coating a web (1) backed by a rotatable backing roll (15). The blade coater unit (2) comprises a support structure (11) feed means (3, 4), mounted to the support structure (11) and capable of feeding the coating mix onto the web when brought close to the web in running conditions, and smoothing means (5) arranged to the immediate vicinity of the web (1) for the application of the fed coating mix. According to the invention the blade coater unit (2) is essentially placed below the backing roll (15) the, smoothing means is a flexible blade (5) having a tip inclination angle .alpha. less than 20°, and the feeder means (4) has a narrow exit …
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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 January 4, 1990 and granted April 20, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 4, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 4, 2012.
- 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.