Flexible absorbent article having increased stiffness before use
CA 2274830 C · Owner: Hines, Letha Margie · Inventors: Hines, Letha Margie; Osborn, Thomas Ward Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disposable absorbent article for wearing in an undergarment such as a , sanitary napkin, pantiliner or incontinence pad is described. The absorbent article comprises a topsheet, a backsheet an absorbent core, and a stiffening , feature. The stiffening feature places the absorbent article in an initially stiffened during placement of the article in an undergarment. After the article is subjected to the forces exerted by the body of the wearer the , stiffening feature no longer provides an increased initial stiffness and the article becomes more flexible.
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 December 5, 1997 and granted October 7, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 5, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 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.