Installation of cured in place liners with air and flow-through steam to cure
CA 2586577 C · Owner: Ina Acquisition Corp. · Inventors: Wang, Weiping; Driver, Franklin Thomas; Coyne, Joseph M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for lining an existing pipeline or conduit with a flexible resin impregnated cured in place liner by pulling in the liner and inflating a resin impregnated , inflation bladder with air and curing the liner with flow-through steam without loss of , pressure is provided. The liner includes a resin absorbent material in tubular form with , an impermeable membrane forming an outer layer. The inflation bladder also includes a , resin absorbent material in tubular form with an impermeable membrane forming an , outer layer and an exhaust assembly at the trailing end and is passed through a , pressurized inversion apparatus into the collapsed liner. As the bladder reaches the …
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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 November 2, 2005 and granted June 3, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 2, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.