Method for forming bucklings in a plate member, tool and plate
CA 2249267 C · Owner: Lena Sundhagen · Inventors: Sundhagen, Gunnar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and tool for forming convexities (3 4) in a plate body (1), which , plate body (1) comprises a main face (2) and a plurality of side edges. The plate body (1) is inserted between two tool halves (11 12), which are brought , together and interact to press a first set of convexities (3) in a first direction relative to the main face (2) of the plate body (1) and a second set of convexities (4) in a second, opposite direction relative to the main face (2) of the plate body (1). The convexities (3 4) are formed along a straight , line across the plate body (1) between two of the side edges thereof. The plate body (1) is secured so that the main face (2) thereof maintains its …
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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 March 21, 1997 and granted December 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2019.
- 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.