US3833481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroforming nickel copper alloys
Assignee: BUCKBEL MEARS CO
•
Filing: 1972-12-18
•
Granted: 1974-09-03
•
Expires: 1992-12-18
Abstract
Abstract A process for electroforming a nickel copper alloy by utilization of a nickel anode in an electrolyte solution containing copper, nickel and boric acid.
Inventors
- 👤 R Olson
- 👤 P Mentone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:38
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/58; C25D5/00; C25D5/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
16 words
The invention of claim 1 wherein the copper in said bath is at least .3 grams/liter.
Claim 2
Dependent Claim
13 words
The invention of claim 2 wherein the electroplating bath includes a wetting agent.
Claim 3
Dependent Claim
19 words
The invention of claim 1 wherein the current supplied between said anode and said cathode comprises a DC current.
Claim 4
Dependent Claim
35 words
The invention of claim 1 wherein the current supplied between said anode and said cathode comprises applying a low voltage signal of about 2 volts intermittent with a high voltage signal of about 15 volts.
Claim 5
Dependent Claim
18 words
The invention of claim 5 wherein the high voltage signal comprises a signal formed by a capacitor discharging.
Claim 6
Dependent Claim
23 words
The invention of claim 5 wherein the capacitive discharge voltage is followed by a low voltage DC signal followed by an off time.
Claim 7
Dependent Claim
14 words
The invention of claim 1 wherein the Ph of the solution is about 1.
Claim 8
Dependent Claim
18 words
The invention of claim 1 wherein the current density ranges from about 75 to about 250 amps/square foot.
References Cited (Backward Citations)
US1969553A
Cited
US1750092A
Cited
US1951893A
Cited
US2575712A
Cited
US2951978A
Cited
GB957808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |