Reduction of odors in absorbent articles
CA 2575782 C · Owner: Cohen, Richmond R. · Inventors: Cohen, Richmond R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided are absorbent articles for retaining a malodorous bodily fluid. The absorbent articles comprise an additive that is a quaternary ammonium salt that is water soluble at 37~C, comprises an alkyl C16-C21 chain and contains , at least two oxygen atoms in the anionic portion of the salt. Also provided are methods of preparing absorbent articles including disposable absorbent , articles containing the above additive.
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 July 19, 2005 and granted July 15, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.