Hood for a wire part and for a press section
CA 2193701 C · Owner: Valmet Corporation · Inventors: Kivimaa, Juha; Pettersson, Henrik; Heikkila, Pertti
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a hood for a wire part and/or for a press section in a paper/board machine, comprising walls and a ceiling (10 20), which form a , closed hood around the wire part and/or the press section air-conditioning , being arranged in connection with the hood. The hood walls (10 20) are , composed of outer and inner walls so that between them there is an air duct for passing a replacement air flow into the interior of the hood towards a substantial middle area of the paper machine through openings that have been made into the inner wall, the replacement air keeping the interior of the hood substantially dry and clean. The walls (10 20) of the hood comprise a , vertical …
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 April 17, 1996 and granted January 4, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 17, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2018.
- 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.