US2881122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroplating
Assignee: Hanson Van Winkle Munning Co
•
Filing: 1957-03-14
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Granted: 1959-04-07
•
Expires: 1977-03-14
Abstract
No abstract record available.
Inventors
- 👤 Foulke Donald Gardner
- 👤 Kardos Otto
- 👤 Koretzky Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:48
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38; C25D3/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PROCESS FOR PRODUCING A BRIGHT COPPER ELECTROPLATE WHICH COMPRISES ELECTRODEPOSITING COPPER FROM AN AQUEOUS ALKALINE CYANIDE PLATING BATH IN WHICH THERE IS DISSOLVED FROM 0.001 TO 1 MILLIMOLE PER LITER OF AN ALKALI-SOLUBLE TELLURIUM COMPOUND, AND FROM 1 TO 250 MILLIMOLES PER LITER OF A WATER-SOLUBLE ACETYLENIC COMPOUND.
Claim 2
Dependent Claim
49 words
A PROCESS FOR PRODUCING A BRIGHT COPPER ELECTROPLATE WHICH COMPRISES ELECTRODEPOSITING COPPER FROM AN AQUEOUS ALKALINE CYANIDE PLATING BATH IN WHICH THERE IS DISSOLVED FROM 0.001 TO 1 MILLIMOLE PER LITER OF AN ALKALI-SOLUBLE TELLURIUM COMPOUND, AND FROM 1 TO 250 MILLIMOLES PER LITER OF A WATER-SOLUBLE ACETYLENIC COMPOUND.
References Cited (Backward Citations)
US2732336A
Cited
US2694677A
Cited
US2701234A
Cited
DE874100C
Cited
US2737485A
Cited
DE924490C
Cited
US2841542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |