Resilient packing product and method and apparatus for producing same
CA 2072147 E · Owner: Eco-Pack Industries, Inc. · Inventors: Parker, Johnny M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and apparatus for producing a resilient packing product from a sheet which comprises: feeding the sheet in a longitudinal direction and cutting the sheet into a plurality of strips. This cutting can be performed by rotating at least two sets of cutting discs. Each of the strips is sequentially folded into a zig-zag shape. The folding step is preferably accomplished by advancing the plurality of strips against a restriction that acts on the strips in such a manner that the natural resilience of the product produces substantially uniform adjacent opposite folds thus causing each of the strips to assume substantially the same zig-zag shape.
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 October 31, 1990 and granted November 16, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 31, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 31, 2012.
- 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.