US3699018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electrodepositing coral copper on copper foil
Assignee: Northern Engraving Co Inc
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Filing: 1971-07-12
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Granted: 1972-10-17
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Expires: 1991-07-12
Abstract
Abstract A PROCESS FOR ELECTRODEPOSITING CORAL COPPER ON COPPER FOIL WHICH USES A PLATING BATH WHICH CONSISTS ESSENTIALLY OF COPPER SULFAMATE, SULFAMIC ACID, SODIUM DIHEXYL SULFOSUCCINATE AND WATER. UTILIZING THIS PLATING BATH WITH LITTLE, IF ANY, AGITATION AND CURRENT DENSITIES BETWEEN 75 AND 140 AMPERES PER SQUARE FOOT, CORAL, OR NODULARIZED COPPER CAN BE DEPOSITED UPON THE COPPER FOIL.
Inventors
- 👤 Clarence A Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:49
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38; C25D5/00; C25D5/60; C25D5/605; C25D5/623; H; H05; H05K; H05K3/00; H05K3/38; H05K3/382; H05K3/384; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355; H05K2203/00; H05K2203/03; H05K2203/0307; H05K2203/07; H05K2203/0703; H05K2203/0723
Claims Analysis
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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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |