Compound sanitary napkin
CA 2210134 C · Owner: Mcfall, Ronald Ray · Inventors: Oetjen, David Christopher; Mcfall, Ronald Ray; Coe, Richard George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention pertains to a compound sanitary napkin. The compound sanitary napkin includes a primary absorbent member secured to a secondary absorbent member. The primary absorbent member includes an absorbent core wrapped in an outer cover, at least a portion of the outer cover being liquid impervious. The secondary absorbent member includes a liquid impervious backsheet and an absorbent material joined thereto. Optionally the secondary , absorbent member includes a backsheet a topsheet joined to the backsheet and an absorbent core disposed between the backsheet and the topsheet.
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 February 6, 1996 and granted April 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 6, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 6, 2018.
- 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.