Extrusion apparatus and method for producing three-dimensional shapes
CA 2199397 C · Owner: The Quaker Oats Company · Inventors: Kunas, Kurt T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An extrusion apparatus for producing three-dimensional objects comprises at least one die (18, 20), an extruder (12) and a rotatable cutter plate (38). , The die is disposed adjacent to an outlet end of the extruder (12). The die (18, 20) forms an opening defining a two-dimensional shape and the extruder , (12) forces an extrudable material through the opening in the die. The rotatable cutter plate (38) is disposed adjacent to the die. The cutter plate (38) is configured to obstruct different portions of the die opening (14 16) , at different times as the cutter plate (38) rotates so as to vary the shape of the extrudable material forced through the opening (14 16) in the die and , …
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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 12, 1996 and granted July 31, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 12, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2018.
- 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.