Hose coated with high molecular weight polyethylene and process for the production thereof
CA 2033285 A1 · Owner: Stamicarbon B.V. · Inventors: Karg, Rudolph F.; Van Der Zande, Harold D.; Kirschbaum, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a hose of which at least the inside or the outside is coated with a layer of polyethylene bonded direct to an elastomeric layer which, polyethylene has a weight-average molecular weight of more than 0.5 x 106 kg/kmole and which layer of polyethylene has been obtained by clearing a layer of polyethylene gel of solvent, and also to a process for preparing such a hose. Possible applications of such a hose are for, instance, those of which the inside and/or the outside of the hose are exposed to the effects of chemical substances and/or of substances with a highly abrasive effect also at, low temperatures.
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 December 27, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 27, 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.