Non-woven textile with liquid wicking or run-off effect
CA 1202453 A · Owner: Freudenberg, Carl · Inventors: Ruzek, Ivo; Hartmann, Ludwig
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A non-woven textile material of synthetic fibres for use as a covering for liquid absorbant material with good run-off properties for movement of liquid to the absorbant material and also good properties against rewetting by liquid then held by the absorbant material. The cationic active surfactant is applied to the surface of the fibres or to the covering and which is, chemosorbable in cellulose in the absorbant layers. The surfactant has the general formula:, where R1 to R4 are selected from alkylaryl-, alkylaryl -, ethoxyl-, alkylethoxylarylethoxyl- and/or alkylarylethoxyl- radicals and A is a suitable anion e.g. a halide.
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
- Granted April 1, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 1, 2003.
- 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.