Manufacturing corrugated board
CA 2112116 C · Owner: Shaw, Neil William · Inventors: Shaw, Neil William; Padanyi, Zsolt Victor; Mutimer, Frederick John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Corrugated paperboards are prepared for corrugation and adhesive bonding of mediums and liners is promoted by exposing the mediums liners and adhesives to radiant energy from a thermal source ranging from 1100 °C to 2300 °C and emitting a dominant wavelength in the range of 2.1 to 1.0 microns. The speed of adhesive bond development is increased. Polymeric adhesives may be used as alternatives to conventional starch based adhesives.
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 August 18, 1992 and granted October 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 18, 2014.
- 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.