Aluminium chassis having heat insulating foam filled in hollow portion, its manufacturing method and apparatus, and method for controlling the apparatus
CA 2317804 A1 · Owner: Yoon, Kyu Tae · Inventors: Yoon, Kyu Tae
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an aluminium chassis (19) having heat insulating foam (20) filled in a hollow portion its manufacturing method and , apparatus and a method for controlling the apparatus and more particularly , to an improvement wherein the heat insulating foam (20) is filled in the hollow portion of the aluminium chassis (10) for window and doors principally in order to improve an efficiency of heat insulation and sound absorption. Especially, the present invention provides a method for manufacturing an aluminium chassis (10) having heat insulating foam (20) filled in the hollow portion comprising: filling preliminary granular foam obtained from a first foaming of …
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
- Filed January 8, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 8, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 2021.
- 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.