Paper tissue roll
CA 2329799 A1 · Owner: The Procter & Gamble Company · Inventors: Robinson, Douglas E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a roll of paper tissue separated into a plurality of tissue segments by means of lines of weakness each tissue segment having a , width between opposite side edges and a length between lines of weakness each line of weakness being essentially straight and extending orthogonally , relative to the side edges of the paper tissue wherein the basis weight of the paper tissue is at least 40 g/m2 and wherein the ratio of the length of a tissue segment to the width of the tissue segment is at least 1.7:1.
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 May 13, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 13, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 2021.
- 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.