Patent US3074859A successfully refreshed from Google Patents.
US3074859A
Expired / Lapsed
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Electroplating electrolyte and method
Assignee: Westinghouse Electric Corp
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Filing: 1960-08-04
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Granted: 1963-01-22
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Expires: 1980-08-04
Abstract
No abstract record available.
Inventors
- 👤 Alfons A Latawiec
- 👤 George H Lockwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:45
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
AN AQUEOUS ELECTROPLATING ELECTROLYTIC SOLUTION CONSISTING ESSENTIALLY OF THE FOLLOWING IN THE STATED PROPORTIONS: FROM 325 TO 400 GRAMS OF CHROMIC ACID PER LITER OF SOLUTION; FROM 3 TO 6.5 GRAMS PER LITER OF SOLUTION OF VANADIUM IN THE FORM OF WATER-SOLUBLE, SUBSTANTIALLY NEUTRAL VANADIUM COMPOUND; WATER-SOLUBLE CARBOXYLIC ACID IN SUCH AMOUNT AS TO PROVIDE A HYDROGEN ION CONCENTRATION EQUAL TO THAT OF GLACIAL ACETIC ACID IN AMOUNT OF FROM 5 TO 10 C.. PER LITER OF SOLUTION; AND SUFFICIENT SULPHATERADIAL-CONTAINING, WATER-SOLUBLE, NON-ALKKALINE, IONIZABLE COMPOUND TO PRODUCE FROM 0.11 TO 0.47 GRAM OF SULPHATE RADICAL PER LITER OF SOLUTION.
Claim 2
Dependent Claim
99 words
AN AQUEOUS ELECTROPLATING ELECTROLYTIC SOLUTION CONSISTING ESSENTIALLY OF THE FOLLOWING IN THE STATED PROPORTIONS: FROM 325 TO 400 GRAMS OF CHROMIC ACID PER LITER OF SOLUTION; FROM 3 TO 6.5 GRAMS PER LITER OF SOLUTION OF VANADIUM IN THE FORM OF WATER-SOLUBLE, SUBSTANTIALLY NEUTRAL VANADIUM COMPOUND; WATER-SOLUBLE CARBOXYLIC ACID IN SUCH AMOUNT AS TO PROVIDE A HYDROGEN ION CONCENTRATION EQUAL TO THAT OF GLACIAL ACETIC ACID IN AMOUNT OF FROM 5 TO 10 C.. PER LITER OF SOLUTION; AND SUFFICIENT SULPHATERADIAL-CONTAINING, WATER-SOLUBLE, NON-ALKKALINE, IONIZABLE COMPOUND TO PRODUCE FROM 0.11 TO 0.47 GRAM OF SULPHATE RADICAL PER LITER OF SOLUTION.
References Cited (Backward Citations)
US1795459A
Cited
US2824829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |