Differential cling forage wrapping film; wrapped bale; method for producing differential cling film; and method for wrapping forage
CA 2260556 A1 · Owner: Munger, Bill C. · Inventors: Munger, Bill C.; Bonke, Douglas D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A differential cling film is provided. The differential cling film includes a core layer having a first surface and a second surface. The core layer, includes a polyethylene polymer. A high cling layer is provided covering the first, surface of the core layer. The high cling layer includes an ultra low density polyethylene and a non-liquid tackifier. A low cling layer is provided covering the, second surface of the core layer. The low cling layer includes polyolefin and non-liquid tackifier. A wrapped bale, a method for producing a differential cling film, and a method for wrapping forage is additionally provided.
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 February 1, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 1, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 1, 2021.
- 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.