US2738318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of copper from an acid bath
Assignee: Udylite Research Corp
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Filing: 1954-12-28
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Granted: 1956-03-13
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Expires: 1974-12-28
Abstract
No abstract record available.
Inventors
- 👤 Richard A Fellows
- 👤 Edwin W Hoover
- 👤 Brown Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:17
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A BATH FOR THE ELECTRODEPOSITION OF COPPER COMPRISING AN AQUEOUS ACIDIC SOLUTION OF COPPER SALTS, A SAFRANINE, MINOR PROPORTIONS OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF THIOUREA, N-ACETYL THIOUREA, N-PROPIONYL THIOUREA, N-TRIFLUOROACETYL THIOUREA, N-PENTAFLUOROPROPIONYL THIOUREA, N-FURFUROYL THIOUREA, DIMETHYL THIOUREA, CYANOACETYL THIOUREA, AND A COMPOUND HAVING THE STRUCTURE:
Claim 2
Dependent Claim
51 words
A BATH FOR THE ELECTRODEPOSITION OF COPPER COMPRISING AN AQUEOUS ACIDIC SOLUTION OF COPPER SALTS, A SAFRANINE, MINOR PROPORTIONS OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF THIOUREA, N-ACETYL THIOUREA, N-PROPIONYL THIOUREA, N-TRIFLUOROACETYL THIOUREA, N-PENTAFLUOROPROPIONYL THIOUREA, N-FURFUROYL THIOUREA, DIMETHYL THIOUREA, CYANOACETYL THIOUREA, AND A COMPOUND HAVING THE STRUCTURE:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |