US2950235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid copper electroplating baths
Assignee: Dehydag Deutsche Hydrierwerke GmbH
•
Filing: 1958-12-04
•
Granted: 1960-08-23
•
Expires: 1978-12-04
Abstract
No abstract record available.
Inventors
- 👤 Strauss Wennemar
- 👤 Willmund Wolf-Dieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:40
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
AN ACID COPPER ELECTROPLATING BATH FOR PRODUCING COPPER ELECTRODEPOSITS OF HIGH QUALITY FREE FROM ANODE SLUDGE, COMPRISING AN AQUEOUS ACID SOLUTION OF A COOPER SALT AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FOLLOWING GENERAL STRUCTURAL FORMULA:
Claim 2
Dependent Claim
41 words
AN ACID COPPER ELECTROPLATING BATH FOR PRODUCING COPPER ELECTRODEPOSITS OF HIGH QUALITY FREE FROM ANODE SLUDGE, COMPRISING AN AQUEOUS ACID SOLUTION OF A COOPER SALT AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FOLLOWING GENERAL STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2849352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |