Process and installation for patterning a web of textile material
CA 2211751 C · Owner: Hartmann, Werner · Inventors: Keller, Alfred; Hartmann, Werner; Pesch, Bernd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A textile web (1), for example, a carpet web is, provided with a patterning agent with thickening agent and subsequently steamed in a steamer (3). The agent residues remaining on the textile web (1) are at least partially removed by mechanical means, and cleaned and decolorized in a cleaning unit (10), leaving a virtually pure thickening agent which can be reused for preparing a new batch of patterning agent in the batching tank (18).
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 28, 1995 and granted June 6, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 28, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 28, 2017.
- 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.