US2734026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodepositton of copper-zinc alloys
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
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Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:12
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PLATING BATH COMPRISING AN ALKALINE ZINC COPPER CYANIDE BATH CONTAINING IN SOLUTION A QUANTITY OF THE PRODUCT OF THE REACTION OF A CYCLIC OXY-ALDEHYDE AND A WATER SOLUBLE ALIPHATIC AMINE CONTAINING AMINO GROUPS FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY AMINO GROUPS, SAID AMINE FURTHER CONTAINING A WATER SOLUBILIZING RADICAL FROM THE GROUP CONSISTING OF HYDROXY, CARBOXY AND SULFONIC RADICALS AND SALTS THEREOF, SAID REACTION PRODUCT BEING SOLUBLE IN ALKALINE AQUEOUS SOLUTIONS HAVING A PH OF ABOUT 12 AND CHARACTERIZED BY THE FACT THAT SAID PRODUCT DOES NOT FORM DEEP BLUE COMPLEX COPPER IONS IN CYANIDE SOLUTIONS CONTAINING SODIUM CUPROUS CYANIDE, SAID QUANTITY BEING SUFFICIENT TO ENHANCE THE BRIGHTNESS OF THE ZINC-COPPER PLATE ELECTRODEPOSITED FROM SAID BATH.
Claim 2
Dependent Claim
119 words
A PLATING BATH COMPRISING AN ALKALINE ZINC COPPER CYANIDE BATH CONTAINING IN SOLUTION A QUANTITY OF THE PRODUCT OF THE REACTION OF A CYCLIC OXY-ALDEHYDE AND A WATER SOLUBLE ALIPHATIC AMINE CONTAINING AMINO GROUPS FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY AMINO GROUPS, SAID AMINE FURTHER CONTAINING A WATER SOLUBILIZING RADICAL FROM THE GROUP CONSISTING OF HYDROXY, CARBOXY AND SULFONIC RADICALS AND SALTS THEREOF, SAID REACTION PRODUCT BEING SOLUBLE IN ALKALINE AQUEOUS SOLUTIONS HAVING A PH OF ABOUT 12 AND CHARACTERIZED BY THE FACT THAT SAID PRODUCT DOES NOT FORM DEEP BLUE COMPLEX COPPER IONS IN CYANIDE SOLUTIONS CONTAINING SODIUM CUPROUS CYANIDE, SAID QUANTITY BEING SUFFICIENT TO ENHANCE THE BRIGHTNESS OF THE ZINC-COPPER PLATE ELECTRODEPOSITED FROM SAID BATH.
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) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |