US3580820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Palladium-nickel alloy plating bath
Assignee: Suwa Seikosha KK
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Filing: 1968-01-04
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Granted: 1971-05-25
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Expires: 1988-01-04
Abstract
Abstract A PALLADIUM-NICKEL ALLOY PLATING BATH IS FORMED OF A SOLUTION OF PALLADIUM SALT AND A NICKEL SALT IN AMMONIA AND A BRIGHTENER IN THE NATURE OF A SULFONATE OR A SULFONAMIDE IS ADDED TO THE BATH IN WHICH A METAL IS PLATED FOR APPROXIMATELY 30 MINUTES AT A PH IN THE RANGE OF 7.5, TEMPERATURE IN THE RANGE OF 30* C., AND CATHODE CURRENT DENSITY IN THE RANGE OF 1 A./DM.2 WITHOUT AGITATION.
Inventors
- 👤 Katsumi Yamamura
- 👤 Shinichi Hayashi
- 👤 Masao Yamamoto
- 👤 Yukio Matsubara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:51
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/567
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |