US2739110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming oxide films on electrodes for electrolytic capacitors
Assignee: General Electric Co
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Filing: 1951-10-27
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Granted: 1956-03-20
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Expires: 1971-10-27
Abstract
No abstract record available.
Inventors
- 👤 Ralph A Ruscetta
- 👤 Alfred F Torrisi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:28
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/0029; H01G9/0032
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE METHOD OF FORMING A DIELECTRIC FILM ON A TANTALUM CAPACITOR ELECTRODE WHICH COMPRISES SUBJECTING SAID ELECTRODE TO A FORMING VOLTAGE WHILE SAID ELECTRODE IS IMMERSED IN A HOT FORMING BATH CONSISTING OF THE RESIDUE OBTAINED BY HEATING A MIXTURE OF AN ETHANOLAMINE, ETHYLENE GLYCOL AND AMMONIUM BORATE AT A TEMPERATURE OF AT LEAST 150*C. UNTIL ALL OF THE COMPONENTS OF THE HEATED MIXTURE VAPORIZABLE BELOW THE TEMPERATURE ARE REMOVED, SAID BATH BEING HELD AT A TEMPERATURE ABOVE THE MELTING POINT OF SAID RESIDUE.
Claim 2
Independent Claim
84 words
THE METHOD OF FORMING A DIELECTRIC FILM ON A TANTALUM CAPACITOR ELECTRODE WHICH COMPRISES SUBJECTING SAID ELECTRODE TO A FORMING VOLTAGE WHILE SAID ELECTRODE IS IMMERSED IN A HOT FORMING BATH CONSISTING OF THE RESIDUE OBTAINED BY HEATING A MIXTURE OF AN ETHANOLAMINE, ETHYLENE GLYCOL AND AMMONIUM BORATE AT A TEMPERATURE OF AT LEAST 150*C. UNTIL ALL OF THE COMPONENTS OF THE HEATED MIXTURE VAPORIZABLE BELOW THE TEMPERATURE ARE REMOVED, SAID BATH BEING HELD AT A TEMPERATURE ABOVE THE MELTING POINT OF SAID RESIDUE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |