US2710832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroplating of iron
Assignee: AT&T Inc
•
Filing: 1952-03-28
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Granted: 1955-06-14
•
Expires: 1972-03-28
Abstract
No abstract record available.
Inventors
- 👤 Russel E Harr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:08
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
AN ELECTROPLATING BATH, WHICH COMPRISES AN AQUEOUS ACID SOLUTION INCLUDING AS A MAJOR COMPONENT FERROUS AMMONIUM SULFATE AND HAVING A SMALL AMOUNT OF AMMONIUM FLUOBORATE ADDED THERETO IN CONCENTRATION SUFFICIENT TO PREVENT FORMATION OF SLIMY PRECIPITATES.
Claim 2
Dependent Claim
36 words
AN ELECTROPLATING BATH, WHICH COMPRISES AN AQUEOUS ACID SOLUTION INCLUDING AS A MAJOR COMPONENT FERROUS AMMONIUM SULFATE AND HAVING A SMALL AMOUNT OF AMMONIUM FLUOBORATE ADDED THERETO IN CONCENTRATION SUFFICIENT TO PREVENT FORMATION OF SLIMY PRECIPITATES.
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) | 1958-06-13 | 1958-12-13 | 1959-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-13 | 1962-12-13 | 1963-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-13 | 1966-12-13 | 1967-06-14 | $7700.00 | Window Closed / Lapsed |