US3069276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic dielectric materials and capacitors incorporating such materials
Assignee: BRITISH DIELECTRIC RES Ltd
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Filing: 1961-06-19
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Granted: 1962-12-18
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Expires: 1981-06-19
Abstract
No abstract record available.
Inventors
- 👤 Domanski Stanislaus Marian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:59
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; H; H01; H01B; H01B3/00; H01B3/02; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; H01G4/1218; H01G4/1227
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A CERAMIC DIELECTRIC MATERIAL HAVING A LOSS TANGENT BELOW 5X10-4 AT ONE MEGACYCLE PER SECOND CONSISTING ESSENTIALLY OF CALCIUM, STRONTIUM AND BISMUTH TITANATES IN PROPERTIONS SUCH THAT (A) STRONTIUM TITANATE FORMS 10% TO 65% BY WEIGHT OF THE TOTAL WEIGHT OF CALCIUM AND STRONTIUM TITANATES USED (B) THE TOTAL WEIGHT OF BISMUTH OXIDE AND TITANATES DIOXIDE (OTHER THAN THAT COMBINED WITH THE CALCIUM AND STRONTIUM TO FORM CALCIUM AND STRONTIUM TITANATES) IS FROM 3.5% TO 17% OF THE TOTAL WEIGHT OF CALCIUM AND STRONTIUM TITANATES AND (C) THE MOLAR PERCENTAGE OF THE TITANIUM DIOXIDE, REFERRED TO IN (B), IS 50% TO 80% OF THE TOTAL CONTENT OF SAID TITANIUM DIOXIDE AND THE BISMUTH OXIDE.
Claim 2
Dependent Claim
114 words
A CERAMIC DIELECTRIC MATERIAL HAVING A LOSS TANGENT BELOW 5X10-4 AT ONE MEGACYCLE PER SECOND CONSISTING ESSENTIALLY OF CALCIUM, STRONTIUM AND BISMUTH TITANATES IN PROPERTIONS SUCH THAT (A) STRONTIUM TITANATE FORMS 10% TO 65% BY WEIGHT OF THE TOTAL WEIGHT OF CALCIUM AND STRONTIUM TITANATES USED (B) THE TOTAL WEIGHT OF BISMUTH OXIDE AND TITANATES DIOXIDE (OTHER THAN THAT COMBINED WITH THE CALCIUM AND STRONTIUM TO FORM CALCIUM AND STRONTIUM TITANATES) IS FROM 3.5% TO 17% OF THE TOTAL WEIGHT OF CALCIUM AND STRONTIUM TITANATES AND (C) THE MOLAR PERCENTAGE OF THE TITANIUM DIOXIDE, REFERRED TO IN (B), IS 50% TO 80% OF THE TOTAL CONTENT OF SAID TITANIUM DIOXIDE AND THE BISMUTH OXIDE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |