Process and apparatus for producing molded articles
CA 2334475 A1 · Owner: Kobra Formen Gmbh · Inventors: Schmucker, Erwin; Braungardt, Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The process produces concrete blocks with different thicknesses of the core concrete and facing concrete in a single mold. To change the height of the core concrete layer and the facing concrete layer, the vertically movable bottom parts of the multichamber mold are first moved into the first vertical position. After the mold is filled with the core concrete the bottom parts together with the core concrete and the lowered pressure plates are moved down into the second vertical position for precompaction. After precompaction, the pressure plates are raised and the mold cavities are filled with the facing concrete. For subsequent finishcompaction the two concrete layers together with 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 February 7, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 7, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 2023.
- 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.