US2602774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of plating copper
Assignee: Individual
•
Filing: 1948-05-11
•
Granted: 1952-07-08
•
Expires: 1968-05-11
Abstract
No abstract record available.
Inventors
- 👤 John F Beaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:55
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
IN A METHOD OF ELECTROLYTICALLY DEPOSITING COPPER FROM A COPPER SULFATE-SULPHURIC ACID BATH CONTAINING ACETYL THIOUREA IN AN AMOUNT OF FROM ABOUT 0.005 TO 0.05 GM./L. AND CHLORIDE ANION IN AN AMOUNT OF FROM ABOUT 0.001 TO 0.015 GM./1., THE STEP OF MAINTAINING THE CHLORIDE ANION CONCENTRATION AT A CONSTANT VALUE WITHIN THE RANGE OF ABOUT 0.001 TO 0.015 GM./L. BY ADDITION OF A CHLORIDE.
Claim 2
Dependent Claim
65 words
IN A METHOD OF ELECTROLYTICALLY DEPOSITING COPPER FROM A COPPER SULFATE-SULPHURIC ACID BATH CONTAINING ACETYL THIOUREA IN AN AMOUNT OF FROM ABOUT 0.005 TO 0.05 GM./L. AND CHLORIDE ANION IN AN AMOUNT OF FROM ABOUT 0.001 TO 0.015 GM./1., THE STEP OF MAINTAINING THE CHLORIDE ANION CONCENTRATION AT A CONSTANT VALUE WITHIN THE RANGE OF ABOUT 0.001 TO 0.015 GM./L. BY ADDITION OF A CHLORIDE.
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) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |