Continuous method of providing individual sheets from a continuous web
CA 2392206 A1 · Owner: Mcneil-Ppc, Inc. · Inventors: Ryan, Sharon; Schoelling, Hans-Werner; Hull, Raymond J. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for separating a supply of material (10) into distinct sections of material (11), while controlling the position and orientation of these distinct sections during further manipulation in a continuous process is disclosed. The method includes forming a line of weakness comprising perforations (50) and scores (51) extending substantially from the first edge to the second edge and applying a force substantially parallel to the length of the web (10) sufficient to separate an individual sheet (11) from the web at the line of weakness.
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 May 11, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 11, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 2022.
- 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.