Titanium oxide and resin composition
CA 2230667 A1 · Owner: Asakura, Ryosuke · Inventors: Kawaji, Tomio; Taniguchi, Tomohiro; Asakura, Ryosuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Titanium oxide exhibiting a filtration-pressure increase of 100 kPa or below after the lapse of 4 minutes, as determined by passing a 13 % by weight suspension thereof in ethylene glycol through a filter paper having an accuracy of filtration of 6 µm at a flow rate of 1.73 cm3/min.cm2 and , having a specific resistance of 7000 .OMEGA..cm or above; and a thermoplastic resin composition containing the same.
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 June 27, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2019.
- 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.