US2528113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single unit capacitor and resistor
Assignee: RCA Corp
•
Filing: 1946-10-18
•
Granted: 1950-10-31
•
Expires: 1966-10-18
Abstract
No abstract record available.
Inventors
- 👤 Wendell L Carlson
- 👤 Robert L Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:24
CPC Classifications
H; H01; H01G; H01G2/00; C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A DIELECTRIC MATERIAL FOR USE IN A UNIT HAVING BOTH USABLE CAPACITANCE AND D.-C. RESISTANCE WITH LOW REACTANCE AT HIGH FREQUENCIES, SAID MATERIAL COMPRISING A CERAMIC BODY CONSISTING ESSENTIALLY OF A MIXTURE OF BARIUM AND STRONTIUM TITANATES, SAID BARIUM AND STRONTIUM TITANATES BEING PRESENT IN SUCH A RATIO AS TO PROVIDE A MIXTURE HAVING A DIELECTRIC CONSTANT OF AT LEAST 2000, AND SAID BODY HAVING DISTRIBUTED HOMOGENEOUSLY THROUGHOUT AN AMOUNT OF FINELY DIVIDED MAGNETITE CONSTITUTING FROM 10 TO 90 PERCENT BY WEIGHT OF THE BODY.
Claim 2
Dependent Claim
85 words
A DIELECTRIC MATERIAL FOR USE IN A UNIT HAVING BOTH USABLE CAPACITANCE AND D.-C. RESISTANCE WITH LOW REACTANCE AT HIGH FREQUENCIES, SAID MATERIAL COMPRISING A CERAMIC BODY CONSISTING ESSENTIALLY OF A MIXTURE OF BARIUM AND STRONTIUM TITANATES, SAID BARIUM AND STRONTIUM TITANATES BEING PRESENT IN SUCH A RATIO AS TO PROVIDE A MIXTURE HAVING A DIELECTRIC CONSTANT OF AT LEAST 2000, AND SAID BODY HAVING DISTRIBUTED HOMOGENEOUSLY THROUGHOUT AN AMOUNT OF FINELY DIVIDED MAGNETITE CONSTITUTING FROM 10 TO 90 PERCENT BY WEIGHT OF THE BODY.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |