Multi-part sets of copy material
CA 2302334 A1 · Owner: Carrs Paper Limited · Inventors: Bond, Michael Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multi-part set (18, 28, 38) comprising a plurality of leaves providing for so-called "carbonless" copying between different leaves of the set comprises , a sheet (10, 20, 30) of substrate material such as paper with respective portions (12,13; 23,24; 24,25; 35,33; 33,34; 34,36) of at least one face of the sheet being treated to provide for imaging therebetween when such portions lie in face-to-face relationship, the sheet of material being provided with at least one separation line (11; 21,22; 31,32) and being folded along or adjacent to said separation line to bring the treated portions into face-toface relationship to form the leaves of the set. A predetermined image such , as a …
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 August 17, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2020.
- 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.