Patent US3454416A successfully refreshed from Google Patents.
US3454416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous bath and method for deposition of copper by chemical reduction
Assignee: Bayer Pharma AG
•
Filing: 1965-12-22
•
Granted: 1969-07-08
•
Expires: 1985-12-22
Abstract
No abstract record available.
Inventors
- 👤 Kurt Heymann
- 👤 Gunter Woldt
- 👤 Helga Grundel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:55
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/38; C23C18/40
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2609339A
Cited
US3361580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |