Expired Canadian patentCanada
Method for installing thermal insulation materials on the inner surface of a duct
CA 1184746 A · Owner: Isolite Babcock Refractories Co. Ltd. · Inventors: Nakagami, Kashiro
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Thermal insulation material is installed on the inner surface of a duct by placing and compressing said material on a cylinder inserting the resulting unit, into a duct and releasing the pressure on said material.
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 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 2, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 24, 1982
GrantedApril 2, 1985
Term endedApril 2, 2002
Patent numberCA 1184746 A
Classification (IPC)B23P11/00 +2 more
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.