Method for connecting inside-empty vertical and horizontal blocks of block-joining materials for the engineering and construction works and block-joining materials
CA 2128076 A1 · Owner: Yamazaki, Keiichiro · Inventors: Yamazaki, Keiichiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method for connecting the inside-empty vertical and horizontal blocks of block-joining materials for civil engineering and construction, and the block-joining materials . The method does not use any mold that fits a cut shape of the vertical block. As a result cost could, be saved and manufacturing efficiency improved. According to the present invention multiple slits(4) are installed into the direction of the axis or the circumference of the edge(3) of the inside-empty vertical block(2), the main hole(8) that fits a cut shape of the block(2) is formed on the horizontal block(7) at intervals of installation of the vertical block(2), the edge(3) of the …
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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 July 14, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 14, 2016.
- 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.