Sheet materials suitable for use as a floor, wall or ceiling covering material, and processes and intermediates for making the same
CA 2299717 A1 · Owner: Kjellqvist, Jerker B. I. · Inventors: Quack, Wolfgang; Thoen, Johan A.; Kjellqvist, Jerker B. I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sheet materials suitable for use as a floor wall or ceiling covering material , are described which comprise (1) a polymer mixture having (A) at least one homogeneously branched ethylene Polymer (A) having a molecular weight distribution, Mw/Mn, less than 3 and a short chain branching distribution index (SCBDI) equal to or greater than 50 percent obtainable by polymerization of ethylene with at least one C3-C20 .alpha.-olefin in the presence of a single site or constrained geometry catalyst; (B) at least one ethylene Polymer (B) having a density at least 0.005 g/cm3 greater than the density of ethylene Polymer (A) and a TREF elution temperature at least 5 ~C greater than the TREF …
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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 August 4, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 4, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 4, 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.