Process for the production of heat insulation panels for large panel construction
CA 2212680 C · Owner: Krecke, Edmond D. · Inventors: Krecke, Edmond D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Described is a process for producing heat-insulated panels for the large-scale panel method of construction which can be used for the, production of load-bearing and non-load-bearing walls and supporting walls. The process is characterised in that firstly a hard foam panel (5) is put on to or extruded on to at least one flat table (1) thereafter place-, reserving devices in the form of frames or the like for the production of door, window and other openings (8, 14 16, 18) and inner hollow chambers, are put in accurately positioned relationship on to the hard foam panel. then the remaining tree surfaces of the hard foam panel (5) are provided with connecting members (12) and preferably fixed …
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 February 7, 1996 and granted May 29, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 7, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 2018.
- 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.