Periodical insert
CA 2036580 C · Owner: Transkrit Corporation · Inventors: Michlin, Irving
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A magazine is provided with an insert which can be utilized as a return mailer. The insert can be stapled or glued in place when the plies of the magazine are assembled together and includes a multi-ply portion in another part of the magazine. The multi-ply portion has a pocket which contains one or more inserts and has a flap which can close over the pocket so that when, removed, the multi-ply portion can be used as a return mailer.
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 19, 1991 and granted March 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2013.
- 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.