US2954331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bright copper plating bath
Assignee: Dayton Bright Copper Co
•
Filing: 1958-08-14
•
Granted: 1960-09-27
•
Expires: 1978-08-14
Abstract
No abstract record available.
Inventors
- 👤 Abbott Charles Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:04
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
AN AQUEOUS ELECTROPLATING ELECTROLYTE COMPRISING ESSENTIALLY COPPER SULFATE, SULFURIC ACID, A PRIMARY BRIGHTENER IN PROPORTIONS OF 5 TO 50 MG./1. OF SOLUTION, SAID PRIMARY BRIGHTENER BEING SELECTED FROM THE GROUP CONSISTING OF PYRIDINE, THIOUREA, ALLYTHIOUREA AND ACETYLTHIOUREA, AND WHEREIN THERE IS ADDITIONALLY INCORPORATED POLYACRYLAMIDE AS A FILLER AND BRIGHTENER, SAID POLYACRYLAMIDE BEING PRESENT IN THE AMOUNT OF 0,005 TO 0.5 G./L.
Claim 2
Dependent Claim
61 words
AN AQUEOUS ELECTROPLATING ELECTROLYTE COMPRISING ESSENTIALLY COPPER SULFATE, SULFURIC ACID, A PRIMARY BRIGHTENER IN PROPORTIONS OF 5 TO 50 MG./1. OF SOLUTION, SAID PRIMARY BRIGHTENER BEING SELECTED FROM THE GROUP CONSISTING OF PYRIDINE, THIOUREA, ALLYTHIOUREA AND ACETYLTHIOUREA, AND WHEREIN THERE IS ADDITIONALLY INCORPORATED POLYACRYLAMIDE AS A FILLER AND BRIGHTENER, SAID POLYACRYLAMIDE BEING PRESENT IN THE AMOUNT OF 0,005 TO 0.5 G./L.
References Cited (Backward Citations)
US2391289A
Cited
US2798040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |