Anti-telescoping adhesive tape product
CA 2428499 A1 · Owner: Henkel Kommanditgesellschaft Auf Aktien · Inventors: Van Cromvoirt, Marc; Vulpitta, Brian A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An adhesive tape product comprises a length of adhesive tape mounted on a core with a reduced tendency to telescope. A layer of compressible foam is provided between the core and the body of tape wound on the core. Alternatively the , core is fabricated to have a slight bulge in its center giving the core a barrel shape thereby reducing the tendency for the body of tape wound upon the core to telescope.
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 November 13, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 13, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2023.
- 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.