A closure containing at least one ethylene polymer
CA 2776495 C · Owner: Dow Global Technologies Llc · Inventors: Michie, William James, Jr.; Wilson, Debra R.; Petsalis, Spyro P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A closure comprising a polyethylene blend composition wherein the , polyethylene blend composition has a short chain branching distribution content in the range , of from 8% to 25% and wherein the polyethylene blend composition comprises: (A) from 10, to 90 weight percent of an ethylene polymer having a density in a range of from 0.947 to, 0.962 g/cm3, and a melt index of from 2 to 8 g/10 minutes; (B) from 90 to 10 weight percent , of an ethylene polymer having a density in a range of from 0.912 to 0.932 g/cm3, a melt index , of from 0.25 to 6 g/10 minutes; and (C) from 0.01 to 3 weight percent of at least one additive, wherein: a difference of densities of components (A) and (B) is …
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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 May 5, 2005 and granted February 6, 2018. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 5, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.