US4665041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric ceramic composition for high frequencies
Assignee: Murata Manufacturing Co Ltd
•
Filing: 1986-05-08
•
Granted: 1987-05-12
•
Expires: 2006-05-08
Abstract
Abstract A dielectric ceramic composition for high frequencies comprises a main component of a TiO 2 -ZrO 2 -Sn 2 O system and contains, as additives, not more than 7 wt % of ZnO, not more than 10 wt % of NiO, and not more than 7 wt % of one metal oxide selected from the group consisting of Nb 2 O 5 , Ta 2 O 5 , WO 3 and Sb 2 O 5 . The main component consists essentially of 22 to 43 wt % of TiO 2 , 38 to 58 wt % of ZrO 2 , and 9 to 26 wt % of SnO 2 .
Inventors
- 👤 Yukio Higuchi
- 👤 Masayoshi Katsube
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:36
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/10; C; C04; C04B; C04B35/00; C04B35/01; C04B35/48; C04B35/49
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
148 words
A dielectric ceramic composition for high frequencies consisting essentially of a main component of a TiO 2 -ZrO 2 -SnO 2 system and additives composed of ZnO, NiO, and one metal oxide selected from the group consisting of Nb 2 O 5 , Ta 2 O 5 , WO 3 and Sb 2 O 5 , said main component consisting essentially of 22 to 43 wt % of TiO 2 , 38 to 58 wt % of ZrO 2 , and 9 to 26 wt % of SnO 2 , the content of ZnO being not more than 7 wt %, the content of NiO being not more than 10 wt %, the content of one metal oxide selected from the group consisting of Nb 2 O 5 , Ta 2 O 5 , WO 3 and Sb 2 O 5 being not more than 7 wt %.
Claim 2
Dependent Claim
148 words
A dielectric ceramic composition for high frequencies consisting essentially of a main component of a TiO 2 -ZrO 2 -SnO 2 system and additives composed of ZnO, NiO, and one metal oxide selected from the group consisting of Nb 2 O 5 , Ta 2 O 5 , WO 3 and Sb 2 O 5 , said main component consisting essentially of 22 to 43 wt % of TiO 2 , 38 to 58 wt % of ZrO 2 , and 9 to 26 wt % of SnO 2 , the content of ZnO being not more than 7 wt %, the content of NiO being not more than 10 wt %, the content of one metal oxide selected from the group consisting of Nb 2 O 5 , Ta 2 O 5 , WO 3 and Sb 2 O 5 being not more than 7 wt %.
Claim 3
Dependent Claim
49 words
The dielectric ceramic composition according to claim 1 containing 40 weight % TiO 2 , 39 weight % ZrO 2 , 21 weight % of SnO 2 , as said main component and, as additives, 0.5% of ZnO, 0.2% of NiO and 1 weight % of said metal oxide.
Claim 4
Dependent Claim
40 words
The dielectric ceramic composition according to claim 1 containing, as additives, not more than 7 wt % of ZnO, not more than 10 wt % of NiO, and not more than 5 wt % of Nb 2 O 5 .
Claim 5
Dependent Claim
36 words
The dielectric ceramic composition according to claim 3 containing, as additives, 0.5 to 5 weight % ZnO, 0.2 to 10 weight % of NiO and 0.5 to 5 weight % of Nb 2 O 3 .
Claim 6
Dependent Claim
40 words
The dielectric ceramic composition according to claim 1 containing, as additives, not more than 7 wt % of ZnO, not more than 10 wt % of NiO, and not more than 7 wt % of Ta 2 O 5 .
Claim 7
Dependent Claim
36 words
The dielectric ceramic composition according to claim 5 containing, as additives, 0.05 to 5 weight % ZnO, 0.2 to 10 weight % of NiO and 0.5 to 7 weight % of Ta 2 O 5 .
Claim 8
Dependent Claim
40 words
The dielectric ceramic composition according to claim 1 containing, as additives, not more than 7 wt % of ZnO, not more than 10 wt % of NiO, and not more than 7 wt % of Sb 2 O 5 .
Claim 9
Dependent Claim
36 words
The dielectric ceramic composition according to claim 7 containing, as additives, 0.5 to 5 weight % ZnO, 0.2 to 10 weight % of NiO and 0.5 to 7 weight % of Sb 2 O 5 .
Claim 10
Dependent Claim
38 words
The dielectric ceramic composition according to claim 1 containing, as additives, not more than 7 wt % of ZnO, not more than 10 wt % of NiO, and not more than 7 wt % of WO 3 .
Claim 11
Dependent Claim
34 words
The dielectric ceramic composition according to claim 9 containing, as additives, 0.5 to 5 weight % ZnO, 0.2 to 10 weight % of NiO and 0.5 to 7 weight % of WO 2 .
References Cited (Backward Citations)
GB1058801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |