Environmentally friendly beverage contact layer of thermoplastic tubing
CA 2253060 A1 · Owner: Pandey, Rupesh N. · Inventors: Jackson, Terry L.; Pandey, Rupesh N.; Pandey, Raj N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a new and economically viable method for making a THERMOPLASTIC Multilayer Tubing which comprises of at least three layers in which the, inner layer P.J.1 is a BARRIER layer which does not allow the permeation and diffusion of, vapours, gases, moisture aroma and flavors. The P.J.1 layer which is totally inert, odourless, non-soluble in water alcohols, beverages, syrups and alike is the contact layer. The P.J.I is a, copolyester with a general formula (C10H8O4)n without any hazardous ingredients and has a, melting point range about 160°C and density between 0.9 and 1.0 g/mL. The outer surface layer comprises of polyethylene P.E. with general formula , (C2H4)n …
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 November 20, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 20, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2020.
- 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.