Patent US3484929A successfully refreshed from Google Patents.
US3484929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soldering methods and compositions
Assignee: Methode Electronics Inc
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Filing: 1966-08-02
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Granted: 1969-12-23
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Expires: 1986-08-02
Abstract
No abstract record available.
Inventors
- 👤 Duane A Schroeder
- 👤 Graham L Gulick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:47
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/001; B23K35/007; B23K35/22; B23K35/36; H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3489
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A METHOD OF SOLDERING COPPER SURFACES WHICH COMPRISES: (A) PROVIDING AN AQUEOUS ALKALINE SOLUTION ESSENTIALLY CONTAINING ASS ITS ACTIVE INGREDIENTS: (A) AN ALKALINE METAL CYANIDE, (B) A COPPER CHELATING AGENT, (B) WETTING PREDETERMINED PORTIONS OF A COPPER SURFACE WITH SAID SOLUTION, AND (C) APPLYING MOLTEN SOLDER TO COPPER SURFACE PORTIONS WETTED WITH SAID SOLUTION IN STEP B.
Claim 2
Independent Claim
57 words
A METHOD OF SOLDERING COPPER SURFACES WHICH COMPRISES: (A) PROVIDING AN AQUEOUS ALKALINE SOLUTION ESSENTIALLY CONTAINING ASS ITS ACTIVE INGREDIENTS: (A) AN ALKALINE METAL CYANIDE, (B) A COPPER CHELATING AGENT, (B) WETTING PREDETERMINED PORTIONS OF A COPPER SURFACE WITH SAID SOLUTION, AND (C) APPLYING MOLTEN SOLDER TO COPPER SURFACE PORTIONS WETTED WITH SAID SOLUTION IN STEP B.
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) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |