US3294653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for fabricating printed circuit components
Assignee: AT&T Inc
•
Filing: 1962-02-28
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Granted: 1966-12-27
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Expires: 1982-02-28
Abstract
No abstract record available.
Inventors
- 👤 Harry N Keller
- 👤 David A Mclean
- 👤 Benjamin H Vromen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:45
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/02; H05K3/06; H05K3/061; H05K3/062; C; C23; C23F; C23F1/00; C25; C25D; C25D11/00; C25D11/02; C25D11/022; C25D5/00; C25D5/02; H01; H01C; H01C7/00; H10; H10N; H10N97/00; H05K1/00; H05K1/02; H05K1/09; H05K2201/00; H05K2201/01; H05K2201/0137; H05K2201/0175; H05K2203/00; H05K2203/03; H05K2203/0315; H05K3/38; H05K3/388
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A METHOD FOR THE FABRICATION OF A PRINTED CIRCUIT COMPONENT WHICH COMPRISES THE STEPS OF SUCCESSIVELY DEPOSITING A LAYER OF A REFRACTORY FILM-FORMING METAL SELECTED FROM THE GROUP CONSISTING OF TANTALUM, NOIBIUM, TITANIUM TUNGSTEN AND ZIRCONIUM ON A SUBSTRATE, COVERING A PORTION OF SAID LAYER WITH AN ALUMINUM PATTERN, ANODIZING THE RESULTANT ASSEMBLY AND REMOVING THE ANODIZED ALUMINUM AND THE ALUMINUM CONTAINED THEREUNDER, AND REMOVING THE REFRACTORY FILM-FORMING METAL LYING UNDER THE SAID ALUMINUM.
Claim 2
Independent Claim
74 words
A METHOD FOR THE FABRICATION OF A PRINTED CIRCUIT COMPONENT WHICH COMPRISES THE STEPS OF SUCCESSIVELY DEPOSITING A LAYER OF A REFRACTORY FILM-FORMING METAL SELECTED FROM THE GROUP CONSISTING OF TANTALUM, NOIBIUM, TITANIUM TUNGSTEN AND ZIRCONIUM ON A SUBSTRATE, COVERING A PORTION OF SAID LAYER WITH AN ALUMINUM PATTERN, ANODIZING THE RESULTANT ASSEMBLY AND REMOVING THE ANODIZED ALUMINUM AND THE ALUMINUM CONTAINED THEREUNDER, AND REMOVING THE REFRACTORY FILM-FORMING METAL LYING UNDER THE SAID ALUMINUM.
References Cited (Backward Citations)
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US2706697A
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US3099610A
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US2993266A
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US3035990A
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US3079536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |