Inorganic porous fine particles
CA 2471714 A1 · Owner: Niiro, Hideaki · Inventors: Onizuka, Kenzo; Niiro, Hideaki; Kuroki, Masakatsu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sol of a porous material which has a small particle diameter is inorganic, and has an even pore diameter; a method of synthesizing the sol; a use of the sol, especially an ink-jet recording medium excellent in ink absorption transparency, water resistance, and light resistance; and a coating fluid for ink-jet recording media. The sol contains an inorganic porous material which has an average particle diameter as measured by the dynamic light scattering method of 10 to 400 nm and an average primary-particle aspect ratio of 2 or higher, has mesopores extending in the lengthwise direction and contains , substantially no secondary aggregate particles.
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 December 24, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 24, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 2024.
- 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.