Perforated packaging tape and dispenser and perforation mechanism therefor
CA 2187435 C · Owner: Jabalee, David J.E. · Inventors: Jabalee, David J.E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A readily tearable packaging tape provided. The packaging tape comprises an elongate main body portion of substantially constant cross section having a generally centrally disposed longitudinal axis a thickness, defined by a top surface and a bottom surface a width defined by a pair of, side edges and a length defined by a first end and a second end and with a coating of adhesive applied to the bottom surface. There are a plurality of tear-inducing cuts formed in the main body portion disposed along the length thereof, such that the packaging tape exhibits the characteristic of ready tearibility at the tear-inducing cuts so as to cause those cuts to developinto elongate tears in the tape …
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 February 8, 1996 and granted December 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 8, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 2018.
- 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.