US3290761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing and attaching non-electrolytic tantalum capacitors
Assignee: Electra Manufacturing Co
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Filing: 1964-07-14
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Granted: 1966-12-13
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Expires: 1984-07-14
Abstract
No abstract record available.
Inventors
- 👤 Roland K Ho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:23
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/10; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204; Y10T29/49208; Y10T29/4921; Y10T29/49211; Y10T29/49213; Y10T29/4998; Y10T29/49982; Y10T29/49986
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
207 words
IN A METHOD OF PRODUCING AN IMPROVED SOLID STATE TANTALUM CAPACITOR, THE COMBINATION OF STEPS COMPRISING PROVIDING A THIN SHEET OF TANTALUM, FORMING A PLURALITY OF TANTALUM ELECTRODES FROM SAID SHEET WITH EACH ELECTRODE BEING CONNECTED TO THE REMAINING BODY PORTION OF SAID SHEET BY A NARROW NECK PORTION SO THAT THE REMAINING BODY PORTION OF THE SHEET PROVIDES A COMMON HEADER FOR ALL THE ELECTRODES FORMED THEREFROM, BENDING SAID NECK PORTIONS SO THAT ALL THE ELECTRODES ARE AT AN ANGLE WITH AT LEAST A PORTION OF SAID COMMON HEADER, SUBJECTING SAID ELECTRODES TO AN ANODIZING TREATMENT TO FORM A LAYER OF TANTALUM OXIDE ON THE SURFACE OF EACH ELECTRODE, SAID TANTALUM OXIDE FORMING A DIELECTRIC LAYER INTEGRAL WITH EACH OF SAID TANTALUM ELECTRODES, COATING SAID DIELECTRIC LAYER WITH A LAYER OF ELECTRICALLY CONDUCTIVE METAL TO FORM A SECOND ELECTRODE ON THE OPPOSITE SIDE OF SAID DIELECTRIC LAYER FROM THE TANTALUM ELECTRODE THEREBY COMPLETING A PLURALITY OF CAPACITORS, SEVERING SAID CAPACITORS FROM THE COMMON HEADER, BONDING A SEVERED CAPACITOR TO A CIRCUIT ON THE SURFACE OF AN INSULATING SUBSTRATE BY MEANS OF A CONDUCTIVE CEMENT APPLIED TO THE SURFACE OF SAID SECOND ELECTRODE OF SAID CAPACITOR, AND ENCAPSULATING SAID CAPACITOR BY COATING IT WITH AN INSULATING MATERIAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |