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Patent US3671274A successfully refreshed from Google Patents.
US3671274A
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US
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Baths for activating the surface of plastics to be chemically metal-plated
Assignee: Giichi Okuno
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Filing: 1970-05-06
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Granted: 1972-06-20
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Expires: 1990-05-06
Abstract
Abstract PLASTIC SURFACE IS ACTIVATED FOR SUBSEQUENT CHEMICAL METAL PLATING BY TREATMENT WITH A SOLUTION CONTAINING, AS ESSENTIAL INGREDIENTS, SULFURIC ACID, SILVER COMPOUND AND METAL HALIDE, AS OPTIONAL INGREDIENTS, CHROMINUM COMPOUND AND PHOSPHORIC ACID.
Inventors
- 👤 Hiroshi Maekawa
- 👤 Choji Yamauchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:09
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/28; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31699
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |