US4697222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for dielectric porcelain and dielectric porcelain and capacitor by use of said composition
Assignee: Canon Inc
•
Filing: 1986-04-09
•
Granted: 1987-09-29
•
Expires: 2006-04-09
Abstract
Abstract A composition for dielectric porcelain comprises BaTiO3 and 1 to 5 mole % of a compound with a molar ratio of Bi2O3:RuO2=1:2 based on said BaTiO3.
Inventors
- 👤 Norio Kaneko
- 👤 Masahito Niibe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:00
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; H01G4/1218; H01G4/1227
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
35 words
A composition for dielectric porcelain comprising BaTiO 3 and 1 to 5 mole % of a compound with a molar ratio of Bi 2 O 3 :RuO 2 =1:2 based on said BaTiO 3 .
Claim 2
Dependent Claim
35 words
A composition for dielectric porcelain comprising BaTiO 3 and 1 to 5 mole % of a compound with a molar ratio of Bi 2 O 3 :RuO 2 =1:2 based on said BaTiO 3 .
Claim 3
Dependent Claim
29 words
A composition for dielecetric porcelain according to claim 1, wherein the compound with a molar ratio of Bi 2 O 3 :RuO 2 is a bismuth type pyrochroite compound.
Claim 4
Dependent Claim
28 words
A composition for dielectric porcelain according to claim 1, further containing 5 mole % or less of a rare earth metal oxide based on said BaTiO 3 .
Claim 5
Dependent Claim
64 words
A composition for dielectric porcelain according to claim 3, further containing 5 mole % or less of a compound selected from among Bi 4 Ti 3 O 12 , PbBi 4 Ti 4 O 15 , SrBi 4 Ti 4 O 15 , BaBi 4 Ti 4 O 15 and Ba 2 Bi 4 Ti 5 O 18 based on said BaTiO 3 .
Claim 6
Dependent Claim
65 words
A composition for dielectric porcelain comprising a bismuth layer compound with a molar ratio of Bi 2 O 3 :TiO 2 =2:3, 1 to 10 modes of BaTiO 3 based on 1 mole of said bismuth layer compound and 1 to 5 mole % of a compound with a molar ratio of Bi 2 O 3 :RuO 2 =1:2 based on said bismuth layer compound.
Claim 7
Dependent Claim
65 words
A composition for dielectric porcelain comprising a bismuth layer compound with a molar ratio of Bi 2 O 3 :TiO 2 =2:3, 1 to 10 modes of BaTiO 3 based on 1 mole of said bismuth layer compound and 1 to 5 mole % of a compound with a molar ratio of Bi 2 O 3 :RuO 2 =1:2 based on said bismuth layer compound.
Claim 8
Dependent Claim
28 words
A composition for dielectric porcelain according to claim 5, wherein the compound with a molar ratio of Bi 2 O 3 :RuO 2 is bismuth type pyrochroite compound.
Claim 9
Dependent Claim
28 words
A composition for dielectric porcelain according to claim 5, further containing 5 mole % or less of a rare earth metal oxide based on said bismuth layer compound.
Claim 10
Dependent Claim
34 words
A composition for dielectric porcelain according to claim 5, further containing 5 mole % or less of a compound selected from among PbO, CaCO 3 and SrCO 3 based on said bismuth layer compound.
Claim 11
Dependent Claim
33 words
A dielectric porcelain comprising BaTiO 3 and 1 to 5 mole % of a compound with a molar ratio of Bi 2 O 3 :RuO 2 =1:2 based on said BaTiO 3 .
Claim 12
Dependent Claim
33 words
A dielectric porcelain comprising BaTiO 3 and 1 to 5 mole % of a compound with a molar ratio of Bi 2 O 3 :RuO 2 =1:2 based on said BaTiO 3 .
Claim 13
Dependent Claim
63 words
A dielectric porcelain comprising a bismuth layer compound with a molar ratio of Bi 2 O 3 :TiO 2 =2;3, 1 to 10 moles of BaTiO 3 based on 1 mole of said bismuth layer compound and 1 to 5 mole % of a compound with a molar ratio of Bi 2 O 3 :RuO 2 =1:2 based on said bismuth layer compound.
Claim 14
Dependent Claim
63 words
A dielectric porcelain comprising a bismuth layer compound with a molar ratio of Bi 2 O 3 :TiO 2 =2;3, 1 to 10 moles of BaTiO 3 based on 1 mole of said bismuth layer compound and 1 to 5 mole % of a compound with a molar ratio of Bi 2 O 3 :RuO 2 =1:2 based on said bismuth layer compound.
Claim 15
Dependent Claim
39 words
A capacitor having electrodes and a molded dielectric porcelain comprising BaTiO 3 and 1 to 5 mole % of a compound with a molar ratio of Bi 2 O 3 :RuO 2 =1:2 based on said BaTiO 3 .
Claim 16
Dependent Claim
39 words
A capacitor having electrodes and a molded dielectric porcelain comprising BaTiO 3 and 1 to 5 mole % of a compound with a molar ratio of Bi 2 O 3 :RuO 2 =1:2 based on said BaTiO 3 .
Claim 17
Dependent Claim
68 words
A capacitor having electrodes and a molded dielectric porcelain comprising a bismuth layer compound with a molar ratio of Bi 2 O 3 :TiO 2 =2:3, 1 to 10 moles of BaTiO 3 based on 1 mole of said bismuth layer compound and 1 to 5 mole % of a compound with a molar ratio of Bi 2 O 3 :RuO 2 =1:2 based on bismuth layer compound.
Claim 18
Dependent Claim
68 words
A capacitor having electrodes and a molded dielectric porcelain comprising a bismuth layer compound with a molar ratio of Bi 2 O 3 :TiO 2 =2:3, 1 to 10 moles of BaTiO 3 based on 1 mole of said bismuth layer compound and 1 to 5 mole % of a compound with a molar ratio of Bi 2 O 3 :RuO 2 =1:2 based on bismuth layer compound.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-09-28 | 1991-03-30 | 1991-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-28 | 1995-03-30 | 1995-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-28 | 1999-03-30 | 1999-09-29 | $7700.00 | Window Closed / Lapsed |