EP0146284A1
Expired / Lapsed
EP
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Methods of manufacturing dielectric metal titanates
Assignee: Sony Corp
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Filing: 1984-11-27
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Granted: —
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Expires: 2004-11-27
Abstract
Abstract A method of manufacturing dielectric metal titanate MTi0 3 where M represents Ba and/or Sr comprises the steps of preparing an aqueous alkaline solution containing at least one metal salt of barium or strontium, and immersing metal titanium into the solution to form the metal titanate MTi0 3 .
Inventors
- 👤 Satoru C/O Patent Depart. Sony Corp. Uedaira
- 👤 Hiroshi C/O Patent Depart. Sony Corp. Yamanoi
- 👤 Hidemasa C/O Patent Depart. Sony Corp. Tamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 18:05
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/0029; H01G9/0032; C; C01; C01G; C01G23/00; C01G23/003; C01G23/006; C23; C23C; C23C22/00; C23C22/05; C23C22/60; C23C22/64; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; H01G4/1218; H01G4/1227; C01P; C01P2002/00; C01P2002/30; C01P2002/34; C01P2002/70; C01P2002/72; C01P2002/76; C01P2002/77; C01P2004/00; C01P2004/01; C01P2004/03; C01P2004/30; C01P2004/32; C01P2004/60; C01P2004/62; C01P2006/00; C01P2006/32; C01P2006/33; C01P2006/36
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
53 words
A method of manufacturing dielectric metal titanate MTi0 3 where M represents Ba or Sr or a mixture thereof; characterised by the steps of: preparing an aqueous alkaline solution containing at least one metal salt of barium or strontium; and immersing metal titanium into said solution to form said metal titanate MTiO 3.
Claim 2
Independent Claim
53 words
A method of manufacturing dielectric metal titanate MTi0 3 where M represents Ba or Sr or a mixture thereof; characterised by the steps of: preparing an aqueous alkaline solution containing at least one metal salt of barium or strontium; and immersing metal titanium into said solution to form said metal titanate MTiO 3.
Claim 3
Independent Claim
73 words
A method of manufacturing dielectric metal titanate MTiO 3 where M represents Ba or Sr or a mixture thereof; characterised by the steps of: preparing an aqueous alkaline solution containing at least one metal salt of barium or strontium; forming a metal titanium layer on a substrate; and immersing said substrate with said metal titanium layer into said solution to convert said metal titanium layer into said dielectric metal titanate MTi0 3 .
Claim 4
Independent Claim
73 words
A method of manufacturing dielectric metal titanate MTiO 3 where M represents Ba or Sr or a mixture thereof; characterised by the steps of: preparing an aqueous alkaline solution containing at least one metal salt of barium or strontium; forming a metal titanium layer on a substrate; and immersing said substrate with said metal titanium layer into said solution to convert said metal titanium layer into said dielectric metal titanate MTi0 3 .
Claim 5
Dependent Claim
20 words
A method according to claim 1 or claim 2, wherein said solution has a pH value not lower than 12.2.
Claim 6
Dependent Claim
22 words
A method according to claim 1, claim 2 or claim 3 wherein said solution contains at least 0.1 mol/l of said salt.
Claim 7
Dependent Claim
40 words
A method according to claim 1 or claim 2 wherein said solution contains at least 0.1 mol/l of barium salt and has a pH value not lower than 12.2, and the temperature of said solution is not lower than 20°C.
Claim 8
Dependent Claim
40 words
A method according to claim 1 or claim 2 wherein said solution contains at least 0.1 mol/I of strontium salt and has a pH value not lower than 13.0, and the temperature of said solution is not lower than 55°C.
Claim 9
Dependent Claim
33 words
A method according to claim 2 wherein said metal titanium layer is partially converted into said metal titanate, thus forming a complex of metal titanium and metal titanate formed on said metal titanium.
Claim 10
Independent Claim
24 words
A method of manufacturing dielectric metal titanate, the method being substantially as hereinbefore described with reference to any one of Examples 1 to 5.
Claim 11
Independent Claim
24 words
A method of manufacturing dielectric metal titanate, the method being substantially as hereinbefore described with reference to any one of Examples 1 to 5.
Claim 12
Dependent Claim
15 words
Dielectric metal titanate made by a method according to any one of the preceding claims.
Claim 13
Dependent Claim
10 words
A capacitance comprising dielectric metal titanate according to claim 9.
References Cited (Backward Citations)
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