Absorbent composition including an uncrosslinked polymer
CA 2286947 A1 · Owner: Reeves, William Grover · Inventors: Dupuis, Mary Jeanne; Reeves, William Grover; Jorgenson, Thomas Patrick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An absorbent composition comprising an uncrosslinked high molecular weight, polymer, wherein the uncrosslinked high molecular weight polymer is treated by a means, to effectively insolubilize the uncrosslinked relatively high molecular , weight polymer such that the absorbent composition exhibits desirable absorbent properties. In particular, the, absorbent composition has the ability to absorb a large quantity of liquid. The absorbent, composition is useful in disposable absorbent products such as those , disposable, absorbent products that are used to absorb bodily liquids. Suitable polymers include, polyethylene oxide, poly(acrylic acid) poly(vinyl alcohol), and poly(vinyl , …
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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 October 19, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 19, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 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.