US2874072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Autocatalytic copper plating process and solution
Assignee: General Electric Co
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Filing: 1956-09-17
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Granted: 1959-02-17
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Expires: 1976-09-17
Abstract
No abstract record available.
Inventors
- 👤 Allen E Cahill
- 👤 Vincent P Mcconnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:24
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/1601; C23C18/1617; C23C18/31; C23C18/38; C23C18/40; C23C18/405
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
69 words
AN AUTOCATALYTIC CHEMICAL REDUCTION PROCESS FOR CONTINUOUSLY PLATING COPPER ON OBJECTS HAVING A CATALYTIC METALLIC SURFACE COMPRISING THE STEPS OF PROVIDING AN AQUEOUS SOLUTION OF A COMPLEX COPPER ION, A CARBONATE RADICAL, A HYDROXIDE RADICAL, FORMALDEHYDE, AND A COMPLEXING AGENT, IMMERSING AN OBJECT TO BE PLATED IN SAID SOLUTION, AND COPPER PLATING SAID IMMERSED OBJECT BY AUTOCATALYTIC REACTION OF SAID SOLUTION AT THE CATALYTIC METALLIC SURFACE OF THE OBJECT.
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) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |