US2774728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Addition agent for copper plating
Assignee: EIDP Inc
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Filing: 1955-09-29
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Granted: 1956-12-18
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Expires: 1975-09-29
Abstract
No abstract record available.
Inventors
- 👤 Christian J Wernlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:40
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38; C25D3/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
32 words
AN AQUEOUS COPPER CYANIDE BATH OF ELECTRODEPOSITING A BRIGHT, DUCTILE, COPPER ELECTROPLATE, SAID BATH CONTAINING ABOUT 5-20 OZ./GAL. OF COPPER CYANIDE, ABOUT 0.006-0.06 OZ./GAL. OF POTASSIUM ANTIMONYL TARTRATE AND METHYLENE-BIS(NAPHTHALENE SULFONIC ACID).
Claim 2
Dependent Claim
32 words
AN AQUEOUS COPPER CYANIDE BATH OF ELECTRODEPOSITING A BRIGHT, DUCTILE, COPPER ELECTROPLATE, SAID BATH CONTAINING ABOUT 5-20 OZ./GAL. OF COPPER CYANIDE, ABOUT 0.006-0.06 OZ./GAL. OF POTASSIUM ANTIMONYL TARTRATE AND METHYLENE-BIS(NAPHTHALENE SULFONIC ACID).
Claim 3
Dependent Claim
37 words
AN AQUEOUS COPPER CYANIDE BATH FOR ELECTRODEPOSITING A BRIGHT, DUCTILE COPPER ELECTROPLATE, SAID BATH CONTAINING ABOUT 5-20 OZ./GAL. OF COPPER CYANIDE, ABOUT 0.05-10 OZ./GAL. OF AN ALKALI METAL THIOCYANATE AND ABOUT 0.006-0.6 OZ./GAL. OF POTASSIUM ANTIMONYL TARTRATE.
Claim 4
Dependent Claim
37 words
AN AQUEOUS COPPER CYANIDE BATH FOR ELECTRODEPOSITING A BRIGHT, DUCTILE COPPER ELECTROPLATE, SAID BATH CONTAINING ABOUT 5-20 OZ./GAL. OF COPPER CYANIDE, ABOUT 0.05-10 OZ./GAL. OF AN ALKALI METAL THIOCYANATE AND ABOUT 0.006-0.6 OZ./GAL. OF POTASSIUM ANTIMONYL TARTRATE.
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) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |