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US3691007A
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Printed circuit board fabrication by electroplating a surface through a porous membrane
Assignee: Mica Corp
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Filing: 1969-08-14
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Granted: 1972-09-12
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Expires: 1989-08-14
Abstract
Abstract THE PRESENT PATENT DESCRIBES A PRINTED CIRCUIT BOARD MATERIAL COMPRISING A RIGID PLASTIC SUBSTRATE, A RESISTIVE LAYER CARRIED ON SAID SUBSTRATE AND A CONDUCTIVE FILM CARRIED ON SAID RESISTIVE LAYER; THE IMPROVEMENT WHEREIN THE RESISTIVE LAYER IS APPLIED TO A PREFORMED CONDUCTIVE LAYER THROUGH A POROUS, POLYMERIC MEMBERANE.
Inventors
- 👤 James Pavlou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:08
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/38; H05K3/382; H05K3/384; H05K1/00; H05K1/16; H05K1/167; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0116; H05K2201/0137; H05K2201/0166; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355; H05K2201/0364; H05K2201/0373; H05K2203/00; H05K2203/03; H05K2203/0361; H05K2203/07; H05K2203/0703; H05K2203/0723; H05K2203/0756; H05K2203/0769; H05K3/22; H05K3/24; H05K3/241; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12389; Y10T428/12396; Y10T428/12444; Y10T428/12451; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/12771; Y10T428/12778; Y10T428/12861; Y10T428/12903; Y10T428/31504; Y10T428/3154; Y10T428/31678; Y10T428/31703
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |