Internal and topical treatment system for nonwoven materials
CA 2242274 A1 · Owner: Creagan, Christopher C. · Inventors: Ning, Xin; Marmon, Samuel E.; Colman, Charles W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A nonwoven web material of polymeric fibers having at least one internal surfactant and at least one topical surfactant. The internal surfactant is an organosilicon compound. The topical surfactant is at least one of an ethoxylated hydrogenated fatty oil, a monosaccharide a monosaccharide derivative, a, polysaccharide and a polysaccharide derivative. The nonwoven web material treated with internal and external surfactants has improved durability and processability over conventional materials treated with only internal or topical surfactants.
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 August 11, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 11, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 11, 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.