Thermoresponsive tube
CA 1052711 A · Owner: Nitto Denki Kogyo Kabushiki Kaisha (Nitto Electric Industrial Co. Ltd.) · Inventors: Nakamura, Syuichi; Moriyama, Yasuhiro; Ogawa, Satoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Thermoshrinkable or thermoexpansive tubes for corrosion prevention or lining of piping are disclosed which have their inner and/or outer walls covered with at least one protective cover to keep them clean from dust dirt, water, or any other foreign matter which might interfere with adhesion to the pipe connection, thus causing corrosion or poor lining.
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 April 17, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 17, 1996.
- 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.