Leak sealing
CA 1308043 C · Owner: Richardson, Arthur William · Inventors: Richardson, Arthur William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention concerns packing seals for leak sealing clamps suitable for on line leak sealing. The packing seals are suitable for use between a sealing clamp and a flange or pipe-being sealed which fit by compression as well as by bonding to surfaces. The packing seals comprise woven mineral or synthetic fibres impregnated with a thermosetting resin, particularly one that sets at a high temperature.
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 September 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 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.