Method and apparatus for packaging a roll of material
CA 2134998 C · Owner: Zajec, Jozef-Franc · Inventors: Zajec, Jozef-Franc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The packaging of a roll of material is achieved by coating at least one side of, a packaging sheet with a water soluble adhesive. At least a portion of one side of the, packaging sheet is wetted after the coating step and the packaging sheet is wound about the, roll of material after the wetting step. The apparatus for packaging the roll of material, includes an unwinding station pulling equipment, a sheet severer, gluing equipment and a, winding station. A packaging sheet is disposed in the unwinding station. The packaging, sheet is coated on at least one surface with a water soluble adhesive. The pulling equipment, has a device for pulling the packaging sheet from the unwinding …
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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 November 3, 1994 and granted March 14, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 3, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 3, 2016.
- 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.