US4771364A
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Composition for dielectric porcelain, dielectric porcelain and capacitor by use of said composition
Assignee: Canon Inc
•
Filing: 1986-04-09
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Granted: 1988-09-13
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Expires: 2006-04-09
Abstract
Abstract A composition for dielectric porcelain comprises Bi 2 O 3 , TiO 2 and RuO 2 .
Inventors
- 👤 Norio Kaneko
- 👤 Masahito Niibe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:18
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; H01G4/1218; C; C04; C04B; C04B33/00; C04B33/24; C04B33/26; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/475
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
59 words
An unfired composition for producing a dielectric porcelain having a dielectric constant of 34 to 130 at a frequency of 1 MH z and a temperature of 25° C. consisting essentially of 25.0 to 43.0 mole % Bi 2 O 3 , 37.0 to 66.0 mole % TiO 2 , and 5.0 to 20.0 mole % RuO 2 .
Claim 2
Dependent Claim
59 words
An unfired composition for producing a dielectric porcelain having a dielectric constant of 34 to 130 at a frequency of 1 MH z and a temperature of 25° C. consisting essentially of 25.0 to 43.0 mole % Bi 2 O 3 , 37.0 to 66.0 mole % TiO 2 , and 5.0 to 20.0 mole % RuO 2 .
Claim 3
Dependent Claim
34 words
An unfired composition for producing a dielectric porcelain according to claim 1, further consisting essentially of an oxide selected from the group consisting of Ce, La, Pr, Sm, Sc, Yb, Ho, Tb and Er.
Claim 4
Dependent Claim
46 words
An unfired composition for producing a dielectric porcelain according to claim 2, wherein the content of the oxide is 37 mole % or less based on the sum of the number of moles of oxide and the number of moles of Bi 2 O 3 .
Claim 5
Dependent Claim
71 words
An unfired composition for producing a dielectric porcelain according to claim 2, wherein the sum of the number of moles of Bi 2 O 3 and the number of moles of the oxide is 25.0 to 43.0 mole %, the number of moles of TiO 2 is 37.0 to 66.0%, and the number of moles of RuO 2 is 5.0 to 20.0 mole %, based on the total number of moles.
Claim 6
Dependent Claim
29 words
An unfired composition for producing a dielectric porcelain according to claim 1, further consisting essentially of an oxide selected from the group consisting of Pb, Zr, Tb and Hf.
Claim 7
Dependent Claim
45 words
An unfired composition for producing a dielectric porcelain according to claim 5, wherein the content of the oxide is 30 mole % or less based on the sum of the number of moles of the oxide and the number of moles of TiO 2 .
Claim 8
Dependent Claim
73 words
An unfired composition for producing a dielectric porcelain according to claim 5, wherein the number of moles of Bi 2 O 3 is 25.0 to 43.0 mole %, the sum of the number of moles of TiO 2 and the number of moles of the oxide is 37.0 to 66.0 mole %, and the number of moles of RuO 2 is 5.0 to 20.0 mole %, based on the total number of moles.
Claim 9
Dependent Claim
45 words
An unfired composition for producing a dielectric porcelain according to claim 6, wherein the content of the oxide is 30 mole % or less based on the sum of the number of moles of the oxide and the number of moles of RuO 2 .
Claim 10
Dependent Claim
73 words
An unfired composition for producing a dielectric porcelain according to claim 5, wherein the number of moles of Bi 2 O 3 is 25.0 to 43.0 mole %, the number of moles of TiO 2 is 37.0 to 66.0 mole %, and the sum of the number of moles of RuO 2 and the number of moles of the oxide is 5.0 to 20.0 mole %, based on the total number of moles.
Claim 11
Dependent Claim
55 words
A dielectric porcelain consisting essentially of 25.0 to 43.0 mole % Bi 2 O 3 , 37.0 to 66.0 mole % TiO 2 , and 5.0 to 20.0 mole % RuO 2 ; and having a dielectric constant of 34 to 130 at a frequency of 1 MH z and a temperature of 25° C.
Claim 12
Dependent Claim
55 words
A dielectric porcelain consisting essentially of 25.0 to 43.0 mole % Bi 2 O 3 , 37.0 to 66.0 mole % TiO 2 , and 5.0 to 20.0 mole % RuO 2 ; and having a dielectric constant of 34 to 130 at a frequency of 1 MH z and a temperature of 25° C.
Claim 13
Dependent Claim
29 words
A dielectric porcelain according to claim 10, further consisting essentially of an oxide selected from the group consisting of Ce, La, Pr, Sm, Sc, Yb, Ho, Tb and Er.
Claim 14
Dependent Claim
42 words
A dielectric porcelain according to claim 11, wherein the content of the oxide is 37 mole % or less based on the sum of the number of moles of the oxide and the number of moles of Bi 2 O 3 .
Claim 15
Dependent Claim
66 words
A dielectric porcelain according to claim 11, wherein the sum of the number of moles of Bi 2 O 3 and the number of moles of the oxide is 25.0 to 43.0 mole %, the number of moles of TiO 2 is 37.0 to 66.0%, and the number of moles of RuO 2 is 5.0 to 20.0 mole %, based on the total number of moles.
Claim 16
Dependent Claim
24 words
A dielectric porcelain according to claim 10, further consisting essentially of an oxide selected from the group consisting of pb, Zr, Tb and Hf.
Claim 17
Dependent Claim
40 words
A dielectric porcelain according to claim 14, wherein the content of the oxide is 30 mole % or less based on the sum of the number of moles of the oxide and the number of moles of TiO 2 .
Claim 18
Dependent Claim
68 words
A dielectric porcelain according to claim 14, wherein the number of moles of Bi 2 O 3 is 25.0 to 43.0 mole %, the sum of the number of moles of TiO 2 and the number of moles of the oxide is 37.0 to 66.0 mole %, and the number of moles of RuO 2 is 5.0 to 20.0 mole %, based on the total number of moles.
Claim 19
Dependent Claim
41 words
A dielectric porcelain according to claim 14, wherein the content of the oxide is 30 mole % or less based on the sum of the number of moles of the selected oxide and the number of moles of RuO 2 .
Claim 20
Dependent Claim
67 words
A dielectric porcelain according to claim 14, wherein the number of moles of Bi 2 O 3 is 25.0 to 43.0 mole the number of moles of TiO 2 is 37.0 to 66.0 mole %, and the sum of the number of moles of RuO 2 and the number of moles of the oxide is 5.0 to 20.0 mole %, based on the total number of moles.
Claim 21
Dependent Claim
88 words
A capacitor comprising a dielectric porcelain, a first electrode on a first surface of said dielectric porcelain, and a second electrode on a second surface of said dielectric porcelain opposite said first surface; said dielectric porcelain consisting essentially of 25.0 to 43.0 mole % Bi 2 O 3 , 37.0 to 66.0 mole % TiO 2 , and 5.0 to 20.0 mole % RuO 2 ; and having a dielectric constant of 34 to 130 at a frequency of 1 MH z and a temperature of 25° C.
Claim 22
Dependent Claim
88 words
A capacitor comprising a dielectric porcelain, a first electrode on a first surface of said dielectric porcelain, and a second electrode on a second surface of said dielectric porcelain opposite said first surface; said dielectric porcelain consisting essentially of 25.0 to 43.0 mole % Bi 2 O 3 , 37.0 to 66.0 mole % TiO 2 , and 5.0 to 20.0 mole % RuO 2 ; and having a dielectric constant of 34 to 130 at a frequency of 1 MH z and a temperature of 25° C.
Claim 23
Dependent Claim
32 words
A capacitor according to claim 19, wherein said dielectric porcelain further consists essentially of an oxide selected from the group consisting of Ce, La, Pr, Sm, Sc, Yb, Ho, Tb and Er.
Claim 24
Dependent Claim
41 words
A capacitor according to claim 20, wherein the content of the oxide is 37 mole % or less based on the sum of the number of moles of the oxide and the number of moles of Bi 2 O 3 .
Claim 25
Dependent Claim
65 words
A capacitor according to claim 20, wherein the sum of the number of moles of Bi 2 O 3 and the number of moles of the oxide is 25.0 to 43.0 mole %, the number of moles of TiO 2 is 37.0 to 66.0%, and the number of moles of RuO 2 is 5.0 to 20.0 mole %, based on the total number of moles.
Claim 26
Dependent Claim
27 words
A capacitor according to claim 19, wherein said dielectric porcelain further consists essentially of an oxide selected from the group consisting of Pb, Zr, Tb and Hf.
Claim 27
Dependent Claim
39 words
A capacitor according to claim 23, wherein the content of the oxide is 30 mole % or less based on the sum of the number of moles of the oxide and the number of moles of TiO 2 .
Claim 28
Dependent Claim
67 words
A capacitor according to claim 23, wherein the number of moles of Bi 2 O 3 is 25.0 to 43.0 mole %, the sum of the number of moles of TiO 2 and the number of moles of the oxide is 37.0 to 66.0 mole %, and the number of moles of RuO 2 is 5.0 to 20.0 mole %, based on the total number of moles.
Claim 29
Dependent Claim
39 words
A capacitor according to claim 23, wherein the content of oxide is 30 mole % or less based on the sum of the number of moles of the selected oxide and the number of moles of RuO 2 .
Claim 30
Dependent Claim
67 words
A capacitor according to claim 23, wherein the number of moles of Bi 2 O 3 is 25.0 to 43.0 mole %, the number of moles of TiO 2 is 37.0 to 66.0 mole %, and the sum of the number of moles of RuO 2 and the number of moles of the oxide is 5.0 to 20.0 mole %, based on the total number of moles.
References Cited (Backward Citations)
US3184660A
Cited
US3553109A
Cited
US4058404A
Cited
US4017320A
Cited
US3974107A
Cited
US4135224A
Cited
DE2849293A1
Cited
US4226735A
Cited
JPS54147461A
Cited
JPS58399A
Cited
JPS58398A
Cited
US4654750A
Cited
US4697222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-13 | 1992-03-14 | 1992-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-13 | 1996-03-14 | 1996-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-13 | 2000-03-14 | 2000-09-13 | $7700.00 | Window Closed / Lapsed |