Fibrous and apertured, three-dimensional, macroscopically expanded plastic web
CA 2175991 C · Owner: Ashton, Gregory · Inventors: Litchholt, John Joseph; Gray, Brian Francis; Ashton, Gregory
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluid pervious web suitable for use as a topsheet on an absorbent article is disclosed. The topsheet includes a fibrous and apertured three-dimensional, macroscopically expanded. plastic web. The fibrous and apertured three-dimensional, macroscopically expanded plastic, web permits bodily fluids to penetrate while providing an improved less plastic-like feel and visual aesthetics.
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 November 14, 1994 and granted September 5, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2016.
- 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.