US3046159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of copper plating by chemical reduction
Assignee: Raytheon Co
•
Filing: 1957-12-17
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Granted: 1962-07-24
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Expires: 1977-12-17
Abstract
No abstract record available.
Inventors
- 👤 Robert R Brookshire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:32
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/38; C23C18/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
THE METHOD OF COPPER PLATING COMPRISING THE STEP OF CONTACTING THE SURFACE TO BE PLATED WITH AN ACIDIC PLATING SOLUTION AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 50* TO ABOUT 110*C., CONSISTING ESSENTIALLY OF A DISSOLVED AMMONIUM SALT, A DISSOLVED HYPOPHOSPHITE REDUCING AGENT, DISSOLVED COPPER IONS, AND AN UNDISSOLVED-COPPER IONCONTAINING COMPOUND IN CONTACT WITH THE PLATING SOLUTION, THE ION RATIO OF SAID HYPOPHOSPHITE ION TO THE UNDISSOLVED COPPER ION BEING IN THE RANGE OF FROM ABOUT 0.5 TO ABOUT 40, AND THE ION RATIO OF THE AMMONIUM ION OF THE DISSOLVED AMMONIUM SALT TO THE UNDISSOLVED COPPER ION BEING IN THE RANGE OF FROM ABOUT 0.025 TO ABOUT 5.
Claim 2
Independent Claim
111 words
THE METHOD OF COPPER PLATING COMPRISING THE STEP OF CONTACTING THE SURFACE TO BE PLATED WITH AN ACIDIC PLATING SOLUTION AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 50* TO ABOUT 110*C., CONSISTING ESSENTIALLY OF A DISSOLVED AMMONIUM SALT, A DISSOLVED HYPOPHOSPHITE REDUCING AGENT, DISSOLVED COPPER IONS, AND AN UNDISSOLVED-COPPER IONCONTAINING COMPOUND IN CONTACT WITH THE PLATING SOLUTION, THE ION RATIO OF SAID HYPOPHOSPHITE ION TO THE UNDISSOLVED COPPER ION BEING IN THE RANGE OF FROM ABOUT 0.5 TO ABOUT 40, AND THE ION RATIO OF THE AMMONIUM ION OF THE DISSOLVED AMMONIUM SALT TO THE UNDISSOLVED COPPER ION BEING IN THE RANGE OF FROM ABOUT 0.025 TO ABOUT 5.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |