US2848394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bright copper plating
Assignee: Hanson Van Winkle Munning Co
•
Filing: 1956-05-04
•
Granted: 1958-08-19
•
Expires: 1976-05-04
Abstract
No abstract record available.
Inventors
- 👤 Foulke Donald Gardner
- 👤 Kardos Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:42
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38; C25D3/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE PROCESS FOR PRODUCING BRIGHT COPPER DEPOSITS WHICH COMPRISES ELECTRODEPOSITING COPPER FROM AN AQUEOUS ALKALINE SOLUTION CONTAINING FROM 20 TO 75 GRAMS PER LITER OF COPPER, FROM 45 TO 125 GRAMS PER LITER OF AN ALKALI METAL CYANIDE, AND FROM ABOUT 1/2 TO ABOUT 25 MILLIMOLS PER LITER OF A TITANIUM COORDINATION COMPOUND HAVING AT LEAST ONE LIGAND SELECTED FROM THE GROUP CONSISTING OF POLYOLS AND ALKANOLAMINES.
Claim 2
Dependent Claim
67 words
THE PROCESS FOR PRODUCING BRIGHT COPPER DEPOSITS WHICH COMPRISES ELECTRODEPOSITING COPPER FROM AN AQUEOUS ALKALINE SOLUTION CONTAINING FROM 20 TO 75 GRAMS PER LITER OF COPPER, FROM 45 TO 125 GRAMS PER LITER OF AN ALKALI METAL CYANIDE, AND FROM ABOUT 1/2 TO ABOUT 25 MILLIMOLS PER LITER OF A TITANIUM COORDINATION COMPOUND HAVING AT LEAST ONE LIGAND SELECTED FROM THE GROUP CONSISTING OF POLYOLS AND ALKANOLAMINES.
References Cited (Backward Citations)
US2732336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |