Tampon with first and second regions having different absorbencies
CA 2471258 C · Owner: Kraemer, Robert · Inventors: Kraemer, Robert
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 tampon, in particular for feminine hygiene with an , introduction end, with a recovery end from which a withdrawal string extends with a first region which extends from the introduction end in the direction of the recovery end and comprises a first material and with a second region , which is located near the recovery end of the tampon and comprises a second material, the first material having a higher absorbency and a higher hydrophilicity than the second material and, essentially perpendicularly to , the longitudinal axis of the tampon at least over part of the extend of said tampon along its longitudinal axis, the diameter of the second region being at …
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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 December 19, 2002 and granted February 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 19, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 2024.
- 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.