US2651609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electroplating copper
Assignee: Poor and Co
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Filing: 1950-07-17
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Granted: 1953-09-08
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Expires: 1970-07-17
Abstract
No abstract record available.
Inventors
- 👤 Allan E Chester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:18
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/18; Y; Y10; Y10S; Y10S204/00; Y10S204/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN A METHOD OF CONTROLLING THE ELECTRODEPOSITION OF COPPER FROM AN ACID COPPER SULFATE PLATING BATH ONTO AN ELECTRICALLY CONDUCTING OBJECT OF A TYPE IN WHICH THE COPPER WOULD NORMALLY BE DEPOSITED IN GREATER CONCENTRATIONS IN SOME AREAS THAN IN OTHERS BY A DIRECT PLATING CURRENT; THE STEP WHICH COMPRISES ELECTRODEPOSITING THE COPPER BY SUBJECTING SAID OBJECT IN AN ACID PLATING BATH TO A PLATING CURRENT HAVING AN ASYMMETRIC ALTERNATING WAVE FROM COMPRISING AN ALTERNATING CURRENT SUPERIMPOSED ON A DIRECT CURRENT IN THE
Claim 2
Dependent Claim
83 words
IN A METHOD OF CONTROLLING THE ELECTRODEPOSITION OF COPPER FROM AN ACID COPPER SULFATE PLATING BATH ONTO AN ELECTRICALLY CONDUCTING OBJECT OF A TYPE IN WHICH THE COPPER WOULD NORMALLY BE DEPOSITED IN GREATER CONCENTRATIONS IN SOME AREAS THAN IN OTHERS BY A DIRECT PLATING CURRENT; THE STEP WHICH COMPRISES ELECTRODEPOSITING THE COPPER BY SUBJECTING SAID OBJECT IN AN ACID PLATING BATH TO A PLATING CURRENT HAVING AN ASYMMETRIC ALTERNATING WAVE FROM COMPRISING AN ALTERNATING CURRENT SUPERIMPOSED ON A DIRECT CURRENT IN THE
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) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |