Flexible and non-water absorbing insulation system
CA 2134040 A1 · Owner: Liquid Carbonic Corporation · Inventors: Rhoades, George D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flexible non-water absorbing insulation, system is described for insulating articles exposed to relatively cold temperatures. This insulation system is especially adapted for insulating delivery or transfer hoses used with cryogenic liquid transfer operations. The insulating material is a thermoplastic sheet-like layer having gas-filled cells to which is attached or bonded to a metallized thermoplastic film. In one embodiment, the metallized thermoplastic material is bonded to the smooth side of the thermoplastic sheet-like material. In another embodiment, metallized thermoplastic material is bonded to both sides of the cell-containing thermoplastic material. The sheet-like insulating …
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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 October 21, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 21, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 2016.
- 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.