US2758076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bright acid copper plating
Assignee: Primerica Inc
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Filing: 1952-10-31
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Granted: 1956-08-07
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Expires: 1972-10-31
Abstract
No abstract record available.
Inventors
- 👤 Passal Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:14
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
AN AQUEOUS ACID BATH SOLUTION FOR BRIGHT COPPER PLATING CONTAINING COPPER SULFATE AS THE SOURCE OF THE COPPER, SULFURIC ACID, ABOUT 0.0005 TO ABOUT 0.03 G./1. OF A FIRST COMPOUND SELECTED FROM THE CLASS CONSISTING OF 2MERCAPTO-BEZIMIDAZOLE AND DERIVATIVES OF 2-MERCAPTOBENZIMIDAZOLE HAVING IN THE 6-MEMBERED RING THEREOF A RADICAL SELECTED FROM THE CLASS CONSISTING OF AMINO AND SUBSTITUTED AMINO RADICALS, AND ABOUT 0.0005 TO ABOUT 0.03 G./1. OF A SECOND COMPOUND SELECTED FROM THE CLASS CONSISTING OF THIOUREA AND ACYL DERIVATIVES OF THIOUREA.
Claim 2
Dependent Claim
83 words
AN AQUEOUS ACID BATH SOLUTION FOR BRIGHT COPPER PLATING CONTAINING COPPER SULFATE AS THE SOURCE OF THE COPPER, SULFURIC ACID, ABOUT 0.0005 TO ABOUT 0.03 G./1. OF A FIRST COMPOUND SELECTED FROM THE CLASS CONSISTING OF 2MERCAPTO-BEZIMIDAZOLE AND DERIVATIVES OF 2-MERCAPTOBENZIMIDAZOLE HAVING IN THE 6-MEMBERED RING THEREOF A RADICAL SELECTED FROM THE CLASS CONSISTING OF AMINO AND SUBSTITUTED AMINO RADICALS, AND ABOUT 0.0005 TO ABOUT 0.03 G./1. OF A SECOND COMPOUND SELECTED FROM THE CLASS CONSISTING OF THIOUREA AND ACYL DERIVATIVES OF THIOUREA.
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) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |