Patent US3306830A successfully refreshed from Google Patents.
US3306830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed circuit boards and their fabrication
Assignee: AT&T Inc
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Filing: 1963-06-13
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Granted: 1967-02-28
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Expires: 1983-06-13
Abstract
No abstract record available.
Inventors
- 👤 Bittrich Gustav
- 👤 Robert A Ehrhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:27
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/40; H05K3/42; H05K3/425; H05K3/426; C; C23; C23C; C23C18/00; C23C18/16; C23C18/1601; C23C18/1603; C23C18/1605; C23C18/1633; C23C18/1646; C23C18/165; C23C18/1653; C23C18/1689; C23C18/31; C23C18/32; C23C18/34; C23C18/36; H05K3/10; H05K3/108; H05K3/18; H05K3/181; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0344; H05K2201/0347; H05K2203/00; H05K2203/07; H05K2203/0703; H05K2203/0723; H05K3/02; H05K3/06; H05K3/061; H05K3/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A METHOD FOR FABRICATING A PRINTED CIRCUIT ON AN INSULATING SURFACE COMPRISING THE STEPS OF DEPOSITING AN INITIAL CONDUCTIVE FILM OF COBALT ON THE INSULATING SURFACE BY THE APPLICATION TO THE SURFACE OF AN ELECTROLESS COBALT SOLUTION HAVING THE COMPOSITION:
Claim 2
Independent Claim
40 words
A METHOD FOR FABRICATING A PRINTED CIRCUIT ON AN INSULATING SURFACE COMPRISING THE STEPS OF DEPOSITING AN INITIAL CONDUCTIVE FILM OF COBALT ON THE INSULATING SURFACE BY THE APPLICATION TO THE SURFACE OF AN ELECTROLESS COBALT SOLUTION HAVING THE COMPOSITION:
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |