Hydroxyl polymer fiber fibrous structures and processes for making same
CA 2620642 C · Owner: The Procter & Gamble Company · Inventors: Cabell, David William; Loebker, David Warren; Trokhan, Paul Dennis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hydroxyl polymer fiber fibrous structures and processes for making same are provided. More particularly, hydroxyl polymer fiber fibrous structures comprising a non- naturally occurring hydroxyl polymer fiber wherein the fibrous structure exhibits a total pore volume of pores in the range of greater than 20 µm to 500 µm of greater than 3.75 mmVg of dry fibrous structure mass, and/or fibrous structures comprising a hydroxyl polymer fiber and a solid additive are provided.
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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 August 22, 2006 and granted August 14, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 22, 2026.
- 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.