Sanitary napkin with perfume-bearing microcapsule adhesive
CA 2243536 C · Owner: The Procter & Gamble Company · Inventors: Hasse, Margaret Henderson
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a sanitary napkin having an adhesive with perfume carrying release agents. Preferably the release agents are microcapsules that release perfume upon removal of a release liner from the adhesive, and/or during the user's wear of the sanitary napkin and/or upon , the removal of the sanitary napkin from the user's undergarment. The perfume releases are either as fragrance bursts diffusion or both.
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 January 16, 1997 and granted October 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 16, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 16, 2019.
- 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.