Article with striated coating layer
CA 2122302 A1 · Owner: Bayer, Glen H. Jr. · Inventors: Bayer, Glen H. Jr.; O'Leary, Timothy J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an article including a substrate, such as paper, having a coating layer on one major surface thereof. The coating layer which is preferably a pressure sensitive adhesive includes an upper surface including a plurality of aperiodic, irregular striae formed therein to provide a reduced effective surface area of the coating layer.
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 April 27, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 27, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 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.