US3903589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for fabrication of anodes
Assignee: Duracell Inc USA
•
Filing: 1974-02-13
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Granted: 1975-09-09
•
Expires: 1994-02-13
Abstract
Abstract A new technique of contacting the ends of film forming metal wire in a slurry of film forming metal powder in a liquid, drying the coating, and sintering the adhering powder to the wire results in anodes suitable for fabrication into capacitors.
Inventors
- 👤 Gerhart P Klein
- 👤 William F Vierou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:32
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/04; H01G9/048; H01G9/052; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METHOD OF MAKING A CAPACITOR COMPRISING THE STEPS OF IMMERSING AN END OF AN ELONGATED WIRE OF FILM-FORMING METAL IN A SLURRY CONSISTING ESSENTIALLY OF A LIQUID AND FILM-FORMING METAL POWDER PARTICLES SUSPENDED IN THE LIQUID, WITHDRAWING THE END OF THE ELONGATED WIRE OF FILM-FORMING METAL FROM THE SLURRY AT A RATE TO DEPOSIT A DROPLE OF LIQUID AND FILM-FORMING METAL POWDER OVER THE END OF THE ELONGATED WIRE IMMERSED IN THE SLURRY, SINTERING DEPOSITED FILM-FORMING METAL POWDER TO THE END OF THE ELONGATED WIRE TO FORM A POROUS DEPOSITE OF FILM-FORMING METAL OVER THE END OF THE ELONGATED WIRE, FORMING A DIELECTRIC OXIDE FILM OVER THE DEPOSITED FILM-FORMING
Claim 2
Independent Claim
110 words
A METHOD OF MAKING A CAPACITOR COMPRISING THE STEPS OF IMMERSING AN END OF AN ELONGATED WIRE OF FILM-FORMING METAL IN A SLURRY CONSISTING ESSENTIALLY OF A LIQUID AND FILM-FORMING METAL POWDER PARTICLES SUSPENDED IN THE LIQUID, WITHDRAWING THE END OF THE ELONGATED WIRE OF FILM-FORMING METAL FROM THE SLURRY AT A RATE TO DEPOSIT A DROPLE OF LIQUID AND FILM-FORMING METAL POWDER OVER THE END OF THE ELONGATED WIRE IMMERSED IN THE SLURRY, SINTERING DEPOSITED FILM-FORMING METAL POWDER TO THE END OF THE ELONGATED WIRE TO FORM A POROUS DEPOSITE OF FILM-FORMING METAL OVER THE END OF THE ELONGATED WIRE, FORMING A DIELECTRIC OXIDE FILM OVER THE DEPOSITED FILM-FORMING
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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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |