US3235392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroless deposition of palladium
Assignee: Automatic Telephone and Electric Co Ltd
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Filing: 1961-10-09
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Granted: 1966-02-15
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Expires: 1981-10-09
Abstract
No abstract record available.
Inventors
- 👤 Miles John Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:13
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/42; C23C18/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A CHEMICAL PLATING BATH FOR THE ELECTROLESS PLATING OF PALLADIUM ON A METAL SURFACE, WHICH CONSISTS ESSENTIALLY OF AN AQUEOUS SOLUTION CONTAINING (1) A SOURCE OF IONS OF PALLADIUM IN COMPLEXED FORM IN AN AMOUNT OF FROM 1 TO 100 G./L. OF PALLADIUM AS METAL, SAID SOURCE BEING SELECTED FROM THE GROUP CONSISTING OF PALLADIUM DIAMMINO-DISULPHAMATE, PALLADIUM DIAMMINO-SULPHATE, AMMONIUM DISULPHAMATO-DINITRITO-PALLADITE, SMMONIUM SULPHATO-DINITRITO-PALLADITE, DISULPHAMATO-DINITRO-PALLADOUS ACID AND SULPHATO-DINITRITO-PALLADOUS ACID AND (2) SULPHAMIC ACID IN A CONCENTRATION SUFFICIENT TO MAINTAIN THE PH OF THE AQUEOUS SOLUTION IN THE RANGE OF 1.0 TO 3.5.
Claim 2
Dependent Claim
90 words
A CHEMICAL PLATING BATH FOR THE ELECTROLESS PLATING OF PALLADIUM ON A METAL SURFACE, WHICH CONSISTS ESSENTIALLY OF AN AQUEOUS SOLUTION CONTAINING (1) A SOURCE OF IONS OF PALLADIUM IN COMPLEXED FORM IN AN AMOUNT OF FROM 1 TO 100 G./L. OF PALLADIUM AS METAL, SAID SOURCE BEING SELECTED FROM THE GROUP CONSISTING OF PALLADIUM DIAMMINO-DISULPHAMATE, PALLADIUM DIAMMINO-SULPHATE, AMMONIUM DISULPHAMATO-DINITRITO-PALLADITE, SMMONIUM SULPHATO-DINITRITO-PALLADITE, DISULPHAMATO-DINITRO-PALLADOUS ACID AND SULPHATO-DINITRITO-PALLADOUS ACID AND (2) SULPHAMIC ACID IN A CONCENTRATION SUFFICIENT TO MAINTAIN THE PH OF THE AQUEOUS SOLUTION IN THE RANGE OF 1.0 TO 3.5.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |