Patent US2464481A successfully refreshed from Google Patents.
Patent US3348990A successfully refreshed from Google Patents.
US3348990A
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Process for electrically interconnecting elements on different layers of a multilayer printed circuit assembly
Assignee: Unisys Corp
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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
2026-11-01 20:14
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
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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) | 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 |