Polyethylene based hot melt adhesive
CA 2203450 A1 · Owner: H.B. Fuller Licensing & Financing, Inc. · Inventors: Godfrey, Darryl A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hot-melt adhesive compositions useful for packaging are disclosed. These hot-melt adhesive compositions are based on modified polyethylene and contain a linear low, density copolymer or terpolymer of ethylene and another alpha-olefin, a polyethylene graft copolymer a, tackifying resin, and a high-melting low viscosity wax. The hot-melt adhesive compositions disclosed herein produce very good adhesive bonds, even at high speed packaging conditions under a broad range of ambient packaging temperatures. These inventive adhesive compositions have a novel combination of good hot tack and good adhesive bond properties, even at extreme conditions.
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 April 23, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 23, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2019.
- 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.