Making a capacitor employing a temporary solid mask in the porous anode
US4127680A · kind A · utility
6Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1977 |
| Grant date | Nov 28, 1978 |
| Priority date | — |
| Expiry date | Feb 3, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G9/012
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Formed porous tantalum pellets each having an extending anode wire are lowered part way into a molten compound such as napthalene. The napthalene wicks its way into substantially all of the pellet pores. Upon removal from the bath the napthalene freezes within each pellet. A liquid insulating material is applied to the anode wire while being masked from entering the porous pellet by the napthalene. The napthalene is subsequently vaporized from the pores and thereafter manganous nitrate is introduced into the pellet and is pyrolyzed to form MnO.sub.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.