US3756891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer circuit board techniques
Assignee: —
•
Filing: 1969-12-08
•
Granted: 1973-09-04
•
Expires: 1989-12-08
Abstract
Abstract THE DISCLOSED TECHNIQUE COMPRISES THE LAMINATION OF TWO OR MORE CIRCUIT BOARDS USING A CONTROLLED FLOW ADHESIVE LAYER; THE CONTROLLED FLOW ADHESIVE PERMITTING THROUGH HOLES TO REMAIN UNOBSTRUCTED AFTER LAMINATION. FINAL INTERCONNECTION IS MADE BY PLATING THROUGH THE HOLES, THEREBY PROVIDING THE REQUISITE INTERCONNECTIONS BETWEEN SURFACES.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:51
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/46; H05K3/4611; H05K3/4626; H05K3/40; H05K3/42; H05K3/429; H05K3/4602; H05K3/4623; H05K2201/00; H05K2201/01; H05K2201/0183; H05K2201/0195; H05K2201/09; H05K2201/09145; H05K2201/092; H05K2201/09209; H05K2201/095; H05K2201/09509; H05K2201/09536; H05K2201/096; H05K2203/00; H05K2203/06; H05K2203/063; H05K2203/07; H05K2203/0703; H05K2203/0733; H05K2203/14; H05K2203/1476; H05K3/38; H05K3/386; H05K3/423; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |