Method of making a wound container
CA 1281572 C · Owner: Macmillan Bloedel Limited · Inventors: Gillard, David F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method of improving the effectiveness of the adhesive joining a first layer forming an inner lining of a wound container to the next adjacent layer comprising laterally spreading the web material forming the first layer while winding same under tension to substantially eliminate relative lateral movement between the liner layer and the next adjacent layer as the adhesive is being set and thereby improve the bonding.
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
- Granted March 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 19, 2008.
- 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.