A liquid absorbent material
CA 2258372 A1 · Owner: Sargeant, Steven J. · Inventors: Rundus, Joshua; Yuan, Shengmei; Sargeant, Steven J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A water-insoluble liquid-absorbent material comprising a cross-linked matrix containing a polymer having at least two cross-linkable functional end groups and substantially free of cross-linking functional groups elsewhere within the polymer that are crosslinked with a cross-linking agent having a functionality greater than two, and in combination therewith, a dye-fixing agent having at least one reactive functional group. An ink jet recording medium having a coating of the water-insoluble liquid-absorbent material on a surface thereof is also provided.
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 January 5, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 5, 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.