Shrinkable pipe wrapping
CA 1294568 C · Owner: W.R. Grace Limited · Inventors: Wingfield, Keith Anthony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A protective wrapping for application to an elongate article such as a pipe comprising a substrate and a membrane of a self-adhesive compound to contact and adhere to the pipe, the wrapping being locatable around the pipe so that it is locked and prevented against longitudinal shrinkage, the substrate being a plastic sheet material which has been longitudinally extended such that when applied and locked it will at ambient temperature tend to contract to form a tightly applied protection around the pipe.
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
- Granted January 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 21, 2009.
- 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.