Method of making sanitary napkin comprising three dimensionally shaped tube of absorbent material
CA 2330106 A1 · Owner: Mcfall, Ronald Ray · Inventors: Noel, John Richard; Mcfall, Ronald Ray; Gann, Diana Lynne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sanitary napking that has a three dimensionally shaped tube of absorbent material and method of making the same is disclosed. The sanitary napkin comprises: a base pad having a body-facing side a garment-facing side, and a , longitudinal centerline. A tube of absorbent material (22) extends outward from the body-facing side of the base pad and is aligned along the longitudinal centerline of the base pad. In one embodiment the tube of , absorbent material (22) comprises an absorbent material and a cover at least partially wrapping the absorbent material. In this embodiment the absorbent , material is penetrated by autogenous bonds that join one portion of the cover to an opposing …
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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 April 22, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2021.
- 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.