US3586534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ohmic contact electrode to semiconducting ceramics and a method for making the same
Assignee: Panasonic Holdings Corp
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Filing: 1969-04-28
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Granted: 1971-06-22
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Expires: 1989-04-28
Abstract
Abstract METHOD FOR PROVIDING OHMIC CONTACT TO AN OXIDE SEMICONDUCTING CERAMIC BY IMMERSING THE CERAMIC IN AN AQUEOUS SOLUTION OF NICKEL CHLORIDE, HYPOPHOSPHITE AND SODIUM CITRATE TO DEPOSIT AN ALLOY OF NICKEL AND PHOSPHORUS ON THE CERAMIC BODY BY AUTOCATALYTIC REACTION, THE AQUEOUS SOLUTION BEING MAINTAINED THROUGHOUT THE PERIOD OF IMMERSION AT A TEMPERATURE OF 90-100*C. AND PH OF 3-10.
Inventors
- 👤 Tsuneharu Nitta
- 👤 Akio Kuito
- 👤 Kaneomi Nagase
- 👤 Takashi Iguchi
- 👤 Hiromitsu Taki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:15
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/28; H01C17/288
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |