Patent US3672940A successfully refreshed from Google Patents.
US3672940A
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US
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Process for chemically depositing nickel on a synthetic resin base material
Assignee: Nihon Kagaku Kizai KK
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Filing: 1970-08-03
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Granted: 1972-06-27
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Expires: 1990-08-03
Abstract
Abstract A PROCESS FOR THE CHEMICAL DEPOSITION OF NICKEL ON A SYNTHETIC RESIN BASE MATERIAL, CHARACTERIZED BY ETCHING THE RESIN BASE MATERIAL IN A NEW ETCHING SOLUTION CONTAINING A PALLADIUM COMPOUND AS THE ADDITIVE THEREBY ELIMINATING THE CONVENTIONAL SENSITIZING AND ACTIVATING TREATMENTS, AND CHEMICALLY DEPOSITING NICKEL ON THE ETCHED RESIN BASE MATERIAL FROM A NEW CHEMICAL NICKEL PLATING BATH CONTAINING AS THE ADDITIVES A WATER-SOLUBLE LEAD COMPOUND AND A SECOND REDUCING COMPOUND SUCH AS ASCORBIC ACID, THEREBY OBTAINING THE NEW PLATING BATH HAVING A BETTER PLATING CAPABILITY AND LONGER LIFETIME.
Inventors
- 👤 Kiyotaka Funada
- 👤 Takashi Shinohara
- 👤 Hiroko Imai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:59
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/28; C23C18/31; C23C18/32; C23C18/34; C23C18/36
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |