Ethylene polymers having superior clarity, enhanced toughness, low extractables and processing ease
CA 2173005 C · Owner: Karol, Frederick John · Inventors: Wasserman, Scott Hanley; Karol, Frederick John; Whiteker, Gregory Todd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ethylene polymers having a Polydispersity Index of about 2 to about 4; a melt index, MI, and Relaxation Spectrum Index RSI, such, that (RSI)(MI0.6) is about 2.5 to about 6.5; c) a Crystallizable Chain Length Distribution Index, Lw/Ln, of about 1.0 to about 9; and d) a density, ?, and a percent haze when fabricated into films such that the percent haze is less than 370? - 330, are provided. These ethylene polymers advantageously combine superior clarity and toughness with low extractables and enhanced processing ease.
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 March 29, 1996 and granted February 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 29, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 2018.
- 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.