Method for manufacturing fine lead titanate powders
CA 1287476 C · Owner: Suzuki, Masayuki · Inventors: Suzuki, Masayuki; Uedaira, Satoru; Yamanoi, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for manufacturing fine powders of lead titanate which includes the steps of reacting a water-soluble titanium compound or the hydrolysis product of a titanium compound with a lead compound in an aqueous alkaline solution having a pH value not less than 11.2, at a temperature not less than 100°C to obtain a precipitate of lead titanate fine powder and then recovering the lead titanate fine powder from the remaining solution. By adjusting the pH and the synthesis temperature at proper values, it is possible to synthesize different forms of lead titanate, including a perovskite structure a pyrochlore, structure, or acicular (needle-like) crystals with a novel crystal phase. The …
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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
- Granted August 13, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 13, 2008.
- 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.