US3607385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing solid capacitors
Assignee: Fujitsu Ltd
•
Filing: 1968-10-21
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Granted: 1971-09-21
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Expires: 1988-10-21
Abstract
Abstract Described is a method of manufacturing a solid capacitor wherein a capacitor is constituted by forming a film or forming metal and attaching manganese dioxide. The method is characterized in that a solution of manganese nitrate in water impregnated in the element is first pyrolyzed under a high temperature and at the moment when generation of NO2 gas is nearly finished, the ambient temperature is kept lower than said temperature.
Inventors
- 👤 Takeshi Namikata
- 👤 Kentaro Hirata
- 👤 Yuji Ichikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:13
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/0029; H01G9/0036; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
The method of claim 1, wherein the high temperature is above 450* C. and the lower temperature is about 400* C.
Claim 2
Dependent Claim
12 words
The method of claim 1, wherein the high temperature is 500* C.
References Cited (Backward Citations)
US3093883A
Cited
US3036249A
Cited
FR1367895A
Cited
US3279030A
Cited
US3277553A
Cited
US3386856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |