Device for pressing sheet material
CA 2006774 C · Owner: Isoform · Inventors: De Smet, Gabriel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Device for pressing sheet material blanks in particular, sheet metal blanks (10) comprising a cushion (2) composed, of an elastic material disposed in a retaining box (1) an, arrangement for preforming the sheet blank constituted by an outer slide carrying an upper blank holder (6) and an, arrangement for finally forming the sheet blank constituted by a central slide acting on a punch (8) the device further, comprising a lower blank holder constituted by an element (3) for supporting and maintaining at least a portion of the sheet blank (10), placed directly on the elastic cushion (2) and cooperative with the upper blank holder (6) for gripping the sheet blank in at least localized regions …
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 December 28, 1989 and granted March 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 28, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 28, 2011.
- 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.