Dryer fabric with air channels on the backside
CA 2498348 C · Owner: Josef, Michael J. · Inventors: Josef, Michael J.; Barbery, Rick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A papermaker~s fabric (10), usable with a dryer section on a paper machine has a first layer (14) and a second layer (16) of cross-machine-direction (CD) yarns (21-32). Interwoven with the CD yarns in a duplex weave is a system of MD yarns (41-52). The MD yarns are provided in groups of at least two adjacent MD yarns. Each group has one first MD yarn (41 44, 47, 50) and one or more , second MD yarn. The first MD yarn interweaves between the first and second layers of CD yarns, each time binding with only one CD yarn. Each second MD yarn also interweaves between first and second layers of CD yarns each time , binding with only one CD yarn in the first layer but floating over at least , …
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 October 24, 2003 and granted March 6, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2025.
- 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.