Patent US4593427A successfully refreshed from Google Patents.
Patent US2777810A successfully refreshed from Google Patents.
US2777810A
Expired / Lapsed
US
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Bath for electroplating silver
Assignee: Elechem Corp
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Filing: 1956-10-03
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Granted: 1957-01-15
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Expires: 1976-10-03
Abstract
No abstract record available.
Inventors
- 👤 Barnet D Ostrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:17
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
AN ELECTRLYTIC BATH FOR DEPOSITING SILVER COMPRISING AN AQUEOUS SOLUTION OF SILVER CYANIDE CONTAINING A SOLUBLE SELENIUM COMPOUND IN WHICH THE SELENIUM HAS A VALENCE OF -2, THE AMOUNT OF SELENIUM PRESENT IN SAID BATH BEING .0001 TO .01 GRAM PER LITER.
Claim 2
Dependent Claim
42 words
AN ELECTRLYTIC BATH FOR DEPOSITING SILVER COMPRISING AN AQUEOUS SOLUTION OF SILVER CYANIDE CONTAINING A SOLUBLE SELENIUM COMPOUND IN WHICH THE SELENIUM HAS A VALENCE OF -2, THE AMOUNT OF SELENIUM PRESENT IN SAID BATH BEING .0001 TO .01 GRAM PER LITER.
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) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |