US3413711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making palladium copper contact for soldering
Assignee: AT&T Inc
•
Filing: 1966-09-07
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Granted: 1968-12-03
•
Expires: 1986-09-07
Abstract
No abstract record available.
Inventors
- 👤 Robert F Brewer
- 👤 Piechocki Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:35
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/001; H; H10; H10N; H10N97/00; H05; H05K; H05K3/00; H05K3/22; H05K3/24; H05K3/244; H05K3/30; H05K3/32; H05K3/34; H05K3/346; Y; Y10; Y10S; Y10S228/00; Y10S228/904; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12681; Y10T428/12771; Y10T428/12861; Y10T428/12868; Y10T428/12875; Y10T428/12882; Y10T428/12944
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE METHOD OF SOLDERING A METALLIC LEAD TO A BASE OF A METAL OTHER THAN COPPER, BUT WHICH HAS AN AFFINITY FOR COPPER, WHICH COMPRISES: DEPOSITING ON THE BASE A LAYER OF COPPER HAVING A THICKNESS OF AT LEAST 12,000 ANGSTROM UNITS; DEPOSITING ON THE COPPER LAYER A LAYER OF APLLADIUM HAVING A THICKNESS BETWEEN 500 AND 750 ANGSTROM UNITS; AND APPLYING SOLDER TO THE METALLIC LEAD AND THE PALLADIUM LAYER TO DISSOLVE THE PALLADIUM AND FORM A BOND WITH THE UNDERLYING COPPER LAYER.
Claim 2
Independent Claim
84 words
THE METHOD OF SOLDERING A METALLIC LEAD TO A BASE OF A METAL OTHER THAN COPPER, BUT WHICH HAS AN AFFINITY FOR COPPER, WHICH COMPRISES: DEPOSITING ON THE BASE A LAYER OF COPPER HAVING A THICKNESS OF AT LEAST 12,000 ANGSTROM UNITS; DEPOSITING ON THE COPPER LAYER A LAYER OF APLLADIUM HAVING A THICKNESS BETWEEN 500 AND 750 ANGSTROM UNITS; AND APPLYING SOLDER TO THE METALLIC LEAD AND THE PALLADIUM LAYER TO DISSOLVE THE PALLADIUM AND FORM A BOND WITH THE UNDERLYING COPPER LAYER.
References Cited (Backward Citations)
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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) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |