US3883411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of thick nickel deposits on permanent cathode blanks
Assignee: Huntington Alloys Corp
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Filing: 1974-04-11
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Granted: 1975-05-13
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Expires: 1994-04-11
Abstract
Abstract A process for electrodepositing nickel deposits of area at least one square decimeter and at least one millimeter thick wherein forces promoting exfoliation of the deposit are balanced against surface roughness of a permanent cathode blank so as to insure adhesion of the deposit to the cathode blank during deposition and enable easy removal of the deposit from the blank after deposition is completed.
Inventors
- 👤 Aubrey Stewart Gendron
- 👤 Victor Alexander Ettel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:06
CPC Classifications
C; C25; C25C; C25C1/00; C25C1/06; C25C1/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
85 words
A PROCESS FOR ELECTRO-DDEPOSITION OF NICKEL COMPRISING ELECTRODEPOSITING SUBSTANTIALLY SULFUR FREE NICKEL CONTINUOUS OVER AN AREA OF AT LEAST ABOUT 1 SQUARE DECIMETER TO A THICKNESS OF AT LEAST ABOUT 1 MILLIMETER ON A ABRASIVELY ROUGHENED, PERMANENT MANDREL MADE OF TITANIUM, ALUMINUM OR STAINLESS STEEL FROM AN AQUEOUS SULFATE BATH SUBSTANTIALLY DEVOID OF CHLORIDE AND HAVING A PH IN THE RANGE OF ABOUT 1.5 TO ABOUT 5.5 UNDER CONDITIONS WHEREBY THE EXFOLIATION INDEX OF THE DEPOSIT IS CORRELATED TO THE SURFACE ROUGHNESS OF THE MANDREL
Claim 2
Dependent Claim
85 words
A PROCESS FOR ELECTRO-DDEPOSITION OF NICKEL COMPRISING ELECTRODEPOSITING SUBSTANTIALLY SULFUR FREE NICKEL CONTINUOUS OVER AN AREA OF AT LEAST ABOUT 1 SQUARE DECIMETER TO A THICKNESS OF AT LEAST ABOUT 1 MILLIMETER ON A ABRASIVELY ROUGHENED, PERMANENT MANDREL MADE OF TITANIUM, ALUMINUM OR STAINLESS STEEL FROM AN AQUEOUS SULFATE BATH SUBSTANTIALLY DEVOID OF CHLORIDE AND HAVING A PH IN THE RANGE OF ABOUT 1.5 TO ABOUT 5.5 UNDER CONDITIONS WHEREBY THE EXFOLIATION INDEX OF THE DEPOSIT IS CORRELATED TO THE SURFACE ROUGHNESS OF THE MANDREL
Claim 3
Dependent Claim
95 words
A process for electrodeposition of nickel comprising electrodepositing substantially sulfur-free nickel continuous over an area of about 1 square meter to a thickness of at least about one mm. on an abrasively roughened permanent mandrel made of titanium, aluminum or stainless steel from an aqueous sulfate bath substantially devoid of chloride and having a pH in the range of about 1.5 to about 5.5 under conditions so that the Exfoliation Index of deposition plotted against the surface roughness of the mandrel is representable by a point lying within the area A,B,C,D,A on the accompanying drawing.
Claim 4
Dependent Claim
95 words
A process for electrodeposition of nickel comprising electrodepositing substantially sulfur-free nickel continuous over an area of about 1 square meter to a thickness of at least about one mm. on an abrasively roughened permanent mandrel made of titanium, aluminum or stainless steel from an aqueous sulfate bath substantially devoid of chloride and having a pH in the range of about 1.5 to about 5.5 under conditions so that the Exfoliation Index of deposition plotted against the surface roughness of the mandrel is representable by a point lying within the area A,B,C,D,A on the accompanying drawing.
Claim 5
Dependent Claim
25 words
A process as in claim 2 wherein the sulfur-free nickel has a positive internal stress of about 500 to about 1800 kilograms per square centimeter.
Claim 6
Dependent Claim
24 words
A process as in claim 1 wherein the sulfur-free nickel has a positive internal stress of about 500 to 1800 kilograms per square centimeter.
Claim 7
Dependent Claim
13 words
The process of claim 2 wherein the electrodeposition occurs during electrowinning of nickel.
Claim 8
Dependent Claim
13 words
The process of claim 2 wherein the mandrel is made of stainless steel.
Claim 9
Dependent Claim
12 words
The process of claim 2 wherein the mandrel is made of titanium.
Claim 10
Dependent Claim
12 words
The process of claim 2 wherein the mandrel is made of aluminum.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |