Hollow core concrete building panel
CA 2038152 A1 · Owner: Kreizinger, Kenneth R. · Inventors: Kreizinger, Kenneth R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a highly flexible building panel design and low cost manufacturing process that enables the connection of two separately finished skins (12A & 12B) with a solid cementitious bond (14 & 16) while creating a hollow core area (18) between said skins. The lightweight panel (10) contains internal formwork (15) for the structural columns (33) and beam (34) which are cast in situ after said panel has been placed. In addition, said hollow core area may be left hollow, partially filled or totally filled with various types of insulating materials as may be desired for a particular application. Due to the high quality finish of both skins the panel, offers significant …
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 March 13, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 13, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 2013.
- 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.