US2978390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gold plating solutions
Assignee: AT&T Inc
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Filing: 1957-07-22
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Granted: 1961-04-04
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Expires: 1977-07-22
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Atwater
- 👤 Edward M Julich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:14
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A GOLD PLATING BATH CONSISTING OF A SOLUTION MADE UP BY MIXING SODIUM GOLD CYANIDE, DISTILLED WATER, AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC AND FLUOBORIC ACIDS, SAID BATH HAVING A PH VALUE OF 1.8.
Claim 2
Dependent Claim
38 words
A GOLD PLATING BATH CONSISTING OF A SOLUTION MADE UP BY MIXING SODIUM GOLD CYANIDE, DISTILLED WATER, AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC AND FLUOBORIC ACIDS, SAID BATH HAVING A PH VALUE OF 1.8.
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) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |