Method and apparatus for producing internally apertured pressure-sensitive labels
CA 2136389 C · Owner: Uarco Incorporated · Inventors: Senft, Richard E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for producing internally apertured pressure-sensitive labels adhered to a non-apertured liner begins with a label web adhered to a first liner. The internal aperture shapes are cut through the web only and not through the liner forming apperture slugs separate from the web. The first liner is then removed from the web, and the separate aperture slugs adhere to and are removed with the liner. Next the web, with apertures, cut out, is adhered to a second liner and the label peripheries in, registry with the apertures, are cut through the web only and not through the liner, forming labels separate from the web. Finally the web is removed from the second liner leaving …
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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 22, 1994 and granted March 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 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.