US3846138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroless copper plating
Assignee: Webline Corp
•
Filing: 1973-08-02
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Granted: 1974-11-05
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Expires: 1993-08-02
Abstract
Abstract 1. IN AN ELECTROLESS COPPER PLATING SOLUTION COMPRISING A SOURCE OF CUPRIC IONS, A REDUCING AGENT THEREFOR, A COMPLEXING AGENT FOR SAID CUPRIC IONS AND A PH ADJUSTOR TO PROVIDE A MINIMUM PH OF AT LEAST 10, THE IMPROVEMENT COMPRISING A STABILIZER FOR SAID SOLUTION SELECTED FROM THE GROUP OF IODOBENZOIC ACID, AMINO METHANE SULFONIC ACID AND MIXTURES THEREOF, SAID STABILIZER BEING PRESENT IN AMOUNT SUFFICIENT TO IMPROVE THE STABILITY OF SAID COPPER PLATING SOLUTION.
Inventors
- 👤 M Gulla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:01
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/38; C23C18/40; C23C18/405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN AN ELECTROLESS COPPER PLATING SOLUTION COMPRISING A SOURCE OF CUPRIC IONS, A REDUCING AGENT THEREFOR, A COMPLEXING AGENT FOR SAID CUPRIC IONS AND A PH ADJUSTOR TO PROVIDE A MINIMUM PH OF AT LEAST 10, THE IMPROVEMENT COMPRISING A STABILIZER FOR SAID SOLUTION SELECTED FROM THE GROUP OF IODOBENZOIC ACID, AMINO METHANE SULFONIC ACID AND MIXTURES THEREOF, SAID STABILIZER BEING PRESENT IN AMOUNT SUFFICIENT TO IMPROVE THE STABILITY OF SAID COPPER PLATING SOLUTION.
Claim 2
Dependent Claim
74 words
IN AN ELECTROLESS COPPER PLATING SOLUTION COMPRISING A SOURCE OF CUPRIC IONS, A REDUCING AGENT THEREFOR, A COMPLEXING AGENT FOR SAID CUPRIC IONS AND A PH ADJUSTOR TO PROVIDE A MINIMUM PH OF AT LEAST 10, THE IMPROVEMENT COMPRISING A STABILIZER FOR SAID SOLUTION SELECTED FROM THE GROUP OF IODOBENZOIC ACID, AMINO METHANE SULFONIC ACID AND MIXTURES THEREOF, SAID STABILIZER BEING PRESENT IN AMOUNT SUFFICIENT TO IMPROVE THE STABILITY OF SAID COPPER PLATING SOLUTION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |