Patent US2735808A successfully refreshed from Google Patents.
US2735808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mirror bright silver plating
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
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Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:02
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/46; C03; C03C; C03C17/00; C03C17/06; C03C17/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE METHOD OF ELECTRODEPOSITING BRIGHT SILVER, WHICH COMPRISES ELECTROLYZING A TARTRATE-FREE SOLUTION CONTAINING SILVER CYANIDE, AN ALKALI METAL CYANIDE, AN ALKALI METAL CARNONATE, AND A SUFFICIENT AMOUNT OF A SOLUBLE COMPLEX OF AN ALKALI METAL, ANTIMONY AND A STRAIGHT CHAIN POLYHYDROXY ALIPHATIC COMPOUND TO IMPART BRIGHTNESS TO THE SILVER ELECTRODEPOSIT, SAID COMPLEX BEING FORMED BY HEATING TO BOILING AN AQUEOUS MIXTURE OF 1 PART ANTIMONY COMPOUND, 1-6 PARTS POLYHYDROXY ALIPHATIC COMPOUND, AND 1-4 PARTS ALKALI METAL HYDROXIDE UNTIL COMPLETE SOLUTION IS OBTAINED.
Claim 2
Independent Claim
82 words
THE METHOD OF ELECTRODEPOSITING BRIGHT SILVER, WHICH COMPRISES ELECTROLYZING A TARTRATE-FREE SOLUTION CONTAINING SILVER CYANIDE, AN ALKALI METAL CYANIDE, AN ALKALI METAL CARNONATE, AND A SUFFICIENT AMOUNT OF A SOLUBLE COMPLEX OF AN ALKALI METAL, ANTIMONY AND A STRAIGHT CHAIN POLYHYDROXY ALIPHATIC COMPOUND TO IMPART BRIGHTNESS TO THE SILVER ELECTRODEPOSIT, SAID COMPLEX BEING FORMED BY HEATING TO BOILING AN AQUEOUS MIXTURE OF 1 PART ANTIMONY COMPOUND, 1-6 PARTS POLYHYDROXY ALIPHATIC COMPOUND, AND 1-4 PARTS ALKALI METAL HYDROXIDE UNTIL COMPLETE SOLUTION IS OBTAINED.
References Cited (Backward Citations)
GB450979A
Cited
US2555375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |