US2883290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic capacitors
Assignee: Sprague Electric Co
•
Filing: 1955-02-09
•
Granted: 1959-04-21
•
Expires: 1975-02-09
Abstract
No abstract record available.
Inventors
- 👤 Planer George Victor
- 👤 Windebank Robert William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:15
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; 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
100 words
IN A CERAMIC CAPACITOR, A CERAMIC DIELECTRIC MATERIAL CONSISTING ESSENTIALLY OF A COMPOUND SELECTED FROM THE CLASS CONSISTING OF TITANATES, ZIRCONATES AND STANNATES OF A METAL SELECTED FROM THE CLASS CONSISTING OF BARIUM, STRONTIUM, CALCIUM, LEAS, ZINC, MAGNESIUM AND CADMIUM HAVING A DIELECTRIC CONSTANT OF FROM 500 TO 6000 AND A FORMING TEMPERATURE OF FROM 1100 TO 1400*C., AND PAR, TICLES OF A METAL OF THE PLATINUM GROUP OF LESS THAN 50 MICRONS IN SIZE DISPERSED IN SAID CERAMIC IN AN AMOUNT OF FROM 5 TO 30% BY WEIGHT, SAID PARTICLES BEING OF A DISCRETE CHARACTER IN SAID FORMED CERAMIC.
Claim 2
Dependent Claim
100 words
IN A CERAMIC CAPACITOR, A CERAMIC DIELECTRIC MATERIAL CONSISTING ESSENTIALLY OF A COMPOUND SELECTED FROM THE CLASS CONSISTING OF TITANATES, ZIRCONATES AND STANNATES OF A METAL SELECTED FROM THE CLASS CONSISTING OF BARIUM, STRONTIUM, CALCIUM, LEAS, ZINC, MAGNESIUM AND CADMIUM HAVING A DIELECTRIC CONSTANT OF FROM 500 TO 6000 AND A FORMING TEMPERATURE OF FROM 1100 TO 1400*C., AND PAR, TICLES OF A METAL OF THE PLATINUM GROUP OF LESS THAN 50 MICRONS IN SIZE DISPERSED IN SAID CERAMIC IN AN AMOUNT OF FROM 5 TO 30% BY WEIGHT, SAID PARTICLES BEING OF A DISCRETE CHARACTER IN SAID FORMED CERAMIC.
References Cited (Backward Citations)
US2027277A
Cited
DE869310C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |