Composite fibrous polyethylene sheet
CA 2026489 A1 · Owner: E. I. Du Pont De Nemours And Company · Inventors: Lim, Hyun S.; Guckert, Joseph Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Composite Fibrous Polyethylene ? ABSTRACT OF THE DISCLOSURE, A bonded composite sheet comprising ? layer of flash-spun polyethylene plexifilamentary fil?-fibril strand sheet in face-to-face contact with a layer of polyethylene synthetic pulp is highly suited fo? detailed printing thereon. TK-2500, (??-00448?) - 15 -
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 September 28, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 2012.
- 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.