Non woven textile structure incorporating stabilized filament assemblies
CA 2402204 A1 · Owner: Lohmann Gmbh & Co. Kg · Inventors: Barth, Georg Martin; Carus, Edmund Hugh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plurality of substantially parallel continuous filaments e.g. of cellulose , acetate or rayon, and preferably newly formed are consolidated or partially , stabilised e.g. by application of solvent and pressure by hydroentanglement, by embossing, or by crimping and stretching. The filament assembly or subassemblies thus produced are further stabilised by folding bundling, twisting or intertwining, e.g. to form braids (10) and are then bonded to a , carrier layer or sandwiched between outer layers (12 14), e.g. by , hydroentanglement, melt blowing spinbonding etc. The stabilised filament assemblies may be arranged spaced transversely and may be cut just prior to bonding so as also to …
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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 18, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 18, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 2022.
- 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.