US2515192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electroplating
Assignee: Poor and Co
•
Filing: 1944-09-27
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Granted: 1950-07-18
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Expires: 1964-09-27
Abstract
No abstract record available.
Inventors
- 👤 Allan E Chester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:25
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/18; Y; Y10; Y10S; Y10S204/00; Y10S204/08; Y10S204/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A METHOD OF CONTROLLING THE ELECTRODEPOSITION OF ANTIMONY FROM AN ANTIMONY TRICHLORIDE PLATING BATH ONTO AN ELECTRICALLY CONDUCTING OBJECT OF A TYPE IN WHICH THE ANTIMONY WOULD NORMALLY BE DEPOSITED IN GREATER CONCENTRATIONS IN SOME AREAS THAN IN OTHERS BY A DIRECT PLATING CURRENT; THE STEP WHICH COMPRISES ELECTRODEPOSITING THE ANTIMONY FROM AN ANTIMONY TRICHLORIDE PLATING BATH BY SUBJECTING SAID OBJECT AS A CATHODE IN THE PLATING BATH TO A PLATING CURRENT HAVING AN ASYMMETRIC ALTERNATING WAVE FORM COMPRISING AN ALTERNATING CURRENT SUPERIMPOSED ON A DIRECT CURRENT IN THE RATIO OF 2-4 VOLTS R. M. S. TO 2.5 VOLTS D. C., REGARDLESS OF THE SPECIFIC CURRENT VALUES, AT CURRENT DENSITIES FROM ABOUT 2 TO ABOUT 15 AMPERES PER SQUARE FOOT.
Claim 2
Dependent Claim
121 words
IN A METHOD OF CONTROLLING THE ELECTRODEPOSITION OF ANTIMONY FROM AN ANTIMONY TRICHLORIDE PLATING BATH ONTO AN ELECTRICALLY CONDUCTING OBJECT OF A TYPE IN WHICH THE ANTIMONY WOULD NORMALLY BE DEPOSITED IN GREATER CONCENTRATIONS IN SOME AREAS THAN IN OTHERS BY A DIRECT PLATING CURRENT; THE STEP WHICH COMPRISES ELECTRODEPOSITING THE ANTIMONY FROM AN ANTIMONY TRICHLORIDE PLATING BATH BY SUBJECTING SAID OBJECT AS A CATHODE IN THE PLATING BATH TO A PLATING CURRENT HAVING AN ASYMMETRIC ALTERNATING WAVE FORM COMPRISING AN ALTERNATING CURRENT SUPERIMPOSED ON A DIRECT CURRENT IN THE RATIO OF 2-4 VOLTS R. M. S. TO 2.5 VOLTS D. C., REGARDLESS OF THE SPECIFIC CURRENT VALUES, AT CURRENT DENSITIES FROM ABOUT 2 TO ABOUT 15 AMPERES PER SQUARE FOOT.
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) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |