Patent US3301704A successfully refreshed from Google Patents.
US3301704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor and process therefor
Assignee: —
•
Filing: —
•
Granted: 1967-01-31
•
Expires: 1984-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:48
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/30; H01G9/00; H01G9/0029; H01G9/0032; H01G9/004; H01G9/04; H01G9/042; H01G9/048; H01G9/052; H01G9/07; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A PROCESS FOR THE PRODUCTION OF A SOLID ELECTROLYTIC CAPACITOR ANODE COMPRISING THE STEPS OF (1) PREHEATING AN OXIDIZED POROUS METAL ANODE HAVING OCCLUDED WATER TO A TEMPERATURE ABOVE 100*C., (2) DIPPING THE ANODE WHILE STILL AT A TEMPERATURE ABOVE 100*C. INTO A SOLUTION OF MANGANESE NITRATE WHICH IS AT A TEMPERATURE BELOW ABOUT 70*C., (3) REMOVING THE ANODE FROM THE MANGANESE NITRATE SOLUTION AND HEATING THE ANODE AT A TEMPERATURE FROM 200 TO 400*C. FOR A TIME SUFFICIENT TO CONVERT MANGANESE NITRATE TO MANGANESE OXIDE, (4) REDIPPING THE ANODE WHILE IT IS STILL AT A TEMPERATURE ABOVE 100*C. INTO A SOLUTION OF MANGANESE NITRATE WHICH IS AT A TEMPERATURE BELEOW ABOUT 70*C., (5) REPEARING STEPS (3) AND (4) A SUFFICIENT NUMBER OF TIMES TO EFFECT A DESIRED FILLING OF THE PORES OF THE ANODE WITH MANGANESE OXIDE.
Claim 2
Dependent Claim
138 words
A PROCESS FOR THE PRODUCTION OF A SOLID ELECTROLYTIC CAPACITOR ANODE COMPRISING THE STEPS OF (1) PREHEATING AN OXIDIZED POROUS METAL ANODE HAVING OCCLUDED WATER TO A TEMPERATURE ABOVE 100*C., (2) DIPPING THE ANODE WHILE STILL AT A TEMPERATURE ABOVE 100*C. INTO A SOLUTION OF MANGANESE NITRATE WHICH IS AT A TEMPERATURE BELOW ABOUT 70*C., (3) REMOVING THE ANODE FROM THE MANGANESE NITRATE SOLUTION AND HEATING THE ANODE AT A TEMPERATURE FROM 200 TO 400*C. FOR A TIME SUFFICIENT TO CONVERT MANGANESE NITRATE TO MANGANESE OXIDE, (4) REDIPPING THE ANODE WHILE IT IS STILL AT A TEMPERATURE ABOVE 100*C. INTO A SOLUTION OF MANGANESE NITRATE WHICH IS AT A TEMPERATURE BELEOW ABOUT 70*C., (5) REPEARING STEPS (3) AND (4) A SUFFICIENT NUMBER OF TIMES TO EFFECT A DESIRED FILLING OF THE PORES OF THE ANODE WITH MANGANESE OXIDE.
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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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |