Sanitary napkin
CA 2189333 C · Owner: The Procter & Gamble Company · Inventors: Ahr, Nicholas Albert; Carrier, Michael Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention pertains to a santary napkin. The sanitary napkin includes a topsheet a first backsheet joined to the topsheet and an absorbent core positioned between the topsheet and the first backsheet. A second backsheet is joined to the first backsheet. The second backsheet includes a line of weakness defining a portion of the second backsheet to be separated from the remainder of the second backsheet. The second backsheet is secured to the first backsheet within the line of weakness along a plurality of bond sites. The bond sites form perforations in the first backsheet upon separation and removal of the second backsheet within the line of weakness.
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 April 7, 1995 and granted August 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 7, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 7, 2017.
- 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.