Organic polymer/inorganic fine particle-dispersed aqueous solution having excellent stability and uses thereof
CA 2350140 A1 · Owner: Takaki, Toshihiko · Inventors: Takaki, Toshihiko; Itoh, Hiroshi; Tanabe, Masaru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An organic polymer/fine inorganic particle aqueous dispersion with excellent dispersion stability which comprises a water-soluble or water-dispersible carboxylated synthetic polymer (A) and sparingly water-soluble fine inorganic particles (B) which have been synthesized by reacting (a) a compound of an element in Group 2 of the Periodic Table with (b) at least one compound selected from organic acids, inorganic acids and salts thereof in the , presence of the polymer (A) and which have a particle diameter of 500 nm or smaller, the (A)/(B) ratio being from 10/90 to 99.99/0.01 (by weight). It is usable as a chemical for papermaking, chemical for ink-jet recording medical , material, and …
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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 November 12, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 12, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 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
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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.