Patent US3832291A successfully refreshed from Google Patents.
US3832291A
Expired / Lapsed
US
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Method of preparing surfaces for electroplating
Assignee: M&T HARSHAW
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Filing: 1973-03-23
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Granted: 1974-08-27
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Expires: 1993-03-23
Abstract
Abstract THIS INVENTION RELATES TO ADHERENT COPPER FILMS FORMED BY IMMERSION, OR ELECTROLYTICALLY ON METALLIC OBJECTS FROM AN AQUEOUS SOLUTION OF (1) A NONOXIDIZING ACID, (2) A COPPER SALT OF A NONOXIDIZING ACID, AND (3) A POLYETHER EXHIBITING AT LEAST 5 ETHER OXYGEN ATOMS PER MOLECULE; TO PROCESSES FOR COATING SAID FILMS; AND TO COMPOSITIONS FOR THE DEPOSITION OF SAID ADHERENT COPPER FILMS.
Inventors
- 👤 D Arcilesi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:13
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/38; C25D5/00; C25D5/34; H; H05; H05K; H05K3/00; H05K3/22; H05K3/24; H05K3/244
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) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |