Honeycomb structure
CA 1280067 C · Owner: Hunter Douglas International N.V. · Inventors: Anderson, Richard N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An expandible honeycomb structure such as used for window coverings made of a foldable material which in, the expanding condition, defines a plurality of longitudinal extending cells, one on top of the other. The material of each cell is adhered to the adjacent cell along at least one portion in which the material is less permeable than the remainder of the material forming the cell to prevent seeping or bleeding of the adhesive.
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 February 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 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.