Dimensionally stable, liquid impermeable, flexible pressbands
CA 2255329 A1 · Owner: Schon, Werner A. · Inventors: Schon, Werner A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method of and a device for the manufacture of dimensionally stable liquid-impermeable, flexible, elastic pressbands particularly for use with broadnip shoepresses of paper making machines. The method comprising pouring a flowable mixture of a prepolymer onto a substrate moved by a distance maintaining device over a cylindrical mandrel and maintained during this movement in an adjustable distance from the surface of said mandrel and, being coated during this movement by a coating device with a flowable prepolymer, wherein during this coating of the substrate threads or wires are laid down onto the substrate in the direction of rotation of the mandrel and are coated …
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 December 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2020.
- 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.