US3348990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for electrically interconnecting elements on different layers of a multilayer printed circuit assembly
Assignee: Unisys Corp
•
Filing: 1963-12-23
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Granted: 1967-10-24
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Zimmerman Julius
- 👤 Pisan George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:37
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/40; H05K3/42; H05K3/429; H05K1/00; H05K1/02; H05K1/11; H05K1/115; H05K2201/00; H05K2201/01; H05K2201/0183; H05K2201/0195; H05K2201/03; H05K2201/0332; H05K2201/0364; H05K2201/0373; H05K2201/09; H05K2201/09209; H05K2201/09654; H05K2201/098; H05K2201/09818; H05K2201/09845; H05K2201/09854; H05K2203/00; H05K2203/03; H05K2203/0346; H05K2203/11; H05K2203/1184; H05K3/38; H05K3/386; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T156/1089; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS FOR ELECTRICALLY INTERCONNECTING ELEMENTS ON DIFFERENT LAYERS OF A MULTILAYER PRINTED CIRCUIT ASSEMBLY; SAID PROCESS COMPRISING THE STEPS OF PRODUCING A STACK HAVING A PLATING PASSAGE; SAID STACK INCLUDING AN INSULATING SHEET BETWEEN A FIRST AND A SECOND PRINTED CIRCUIT BOARD EACH HAVING A CONDUCTIVE ELEMENT THROUGH WHICH SAID PASSAGE EXTENDS; FORMING FROOVE MEANS IN THE WAL OF SAID PASSAGE TO EXPOSE MORE EXTENSIVE SURFACE AREAS OF SAID
Claim 2
Dependent Claim
70 words
A PROCESS FOR ELECTRICALLY INTERCONNECTING ELEMENTS ON DIFFERENT LAYERS OF A MULTILAYER PRINTED CIRCUIT ASSEMBLY; SAID PROCESS COMPRISING THE STEPS OF PRODUCING A STACK HAVING A PLATING PASSAGE; SAID STACK INCLUDING AN INSULATING SHEET BETWEEN A FIRST AND A SECOND PRINTED CIRCUIT BOARD EACH HAVING A CONDUCTIVE ELEMENT THROUGH WHICH SAID PASSAGE EXTENDS; FORMING FROOVE MEANS IN THE WAL OF SAID PASSAGE TO EXPOSE MORE EXTENSIVE SURFACE AREAS OF SAID
References Cited (Backward Citations)
USRE24165E
Cited
US2502291A
Cited
US2771663A
Cited
US3077511A
Cited
US2990310A
Cited
US3081203A
Cited
US3201851A
Cited
US3219749A
Cited
US3234060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |