US2768944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper coating by galvanic action
Assignee: Individual
•
Filing: 1955-12-15
•
Granted: 1956-10-30
•
Expires: 1975-12-15
Abstract
No abstract record available.
Inventors
- 👤 Meth Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:23
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
THE METHOD OF COPPER PLATING A SILVERED SURFACE BY GALVANIC ACTION WHICH CONSISTS IN SIMULTANEOUSLY SPRAYING ONTO THE SURFACE A SOLUTION COMPOSED OF 6 TO 40 OUNCES OF A COPPER SALT AND 1/4 TO 3 OUNCES OF SULPHURIC ACID PER GALLON OF WATER, AND A MIXTURE OF WATER, METALLIC DUST AND AN ALKALI, THE DUST BEING IN A CONCENTRATION OF 1/2 TO 3 OUNCES PER GALLON OF WATER AND THE ALKALI BEING IN CONCENTRATION OF 1/4 TO 3 OUNCES PER GALLON OF WATER, THE DUST BEING HOMOGENEOUSLY SUSPENDED IN THE WATER AND IN THE ALKALI AND BEING SELECTED FROM THE GROUP OF METALS CONSISTING OF ZINC, IRON, CADMIMUM, MICKEL, COBALT AND CHROMIUM.
Claim 2
Independent Claim
112 words
THE METHOD OF COPPER PLATING A SILVERED SURFACE BY GALVANIC ACTION WHICH CONSISTS IN SIMULTANEOUSLY SPRAYING ONTO THE SURFACE A SOLUTION COMPOSED OF 6 TO 40 OUNCES OF A COPPER SALT AND 1/4 TO 3 OUNCES OF SULPHURIC ACID PER GALLON OF WATER, AND A MIXTURE OF WATER, METALLIC DUST AND AN ALKALI, THE DUST BEING IN A CONCENTRATION OF 1/2 TO 3 OUNCES PER GALLON OF WATER AND THE ALKALI BEING IN CONCENTRATION OF 1/4 TO 3 OUNCES PER GALLON OF WATER, THE DUST BEING HOMOGENEOUSLY SUSPENDED IN THE WATER AND IN THE ALKALI AND BEING SELECTED FROM THE GROUP OF METALS CONSISTING OF ZINC, IRON, CADMIMUM, MICKEL, COBALT AND CHROMIUM.
References Cited (Backward Citations)
US2720487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |