US2938805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of stabilizing autocatalytic copper plating solutions
Assignee: General Electric Co
•
Filing: 1958-03-31
•
Granted: 1960-05-31
•
Expires: 1978-03-31
Abstract
No abstract record available.
Inventors
- 👤 Maynard C Agens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:32
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/38; C23C18/40; C23C18/405
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
43 words
A SOLUTION OF AUTOCATALYTICALLY PLATING COPPER WHICH IS STABILIZED AGAINST SELF-DECOMPOSITION COMPRISING AN AQUEOUS, ALKALINE SOLUTION OF FORMALDEHYDE AND A CUPRIC ION WHICH HAS BEEN COMPLEXED SO THAT THE SOLUTION IS FREE OF CUPRIC HYDROXIDE, SAID SOLUTION CONTAINING A GAS CONTAINING ELEMENTAL OXYGEN.
References Cited (Backward Citations)
US2801935A
Cited
US2759845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |