Patent EP0379686A2 successfully refreshed from Google Patents.
EP0379686A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Printed circuit board
Assignee: Nippon CMK Corp
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Filing: 1989-12-06
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Granted: —
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Expires: 2009-12-06
Abstract
Abstract A printed circuit board comprising on each surface thereof a heat- and weather-resistant sealing member (3a) filled in a conducting through-hole portion (7), and an electronic wave-shielding layer (5) via an insulating layer (4), making it possible to obtain an excellent electromagnetic wave-shielding effect.
Inventors
- 👤 Shin Kawakami
- 👤 Satoshi Haruyama
- 👤 Hirotaka Okonogi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 18:06
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/002; H05K9/0039; H05K1/00; H05K1/02; H05K1/0213; H05K1/0216; H05K1/0218; H05K3/00; H05K3/0094; H05K3/46; H05K3/4602; H05K2201/00; H05K2201/02; H05K2201/0203; H05K2201/0206; H05K2201/0215; H05K2201/07; H05K2201/0707; H05K2201/0715; H05K2201/09; H05K2201/09209; H05K2201/095; H05K2201/09536; H05K2201/0959; H05K3/40; H05K3/4038; H05K3/4053; H05K3/4069
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
31 words
A printed circuit board, characterized in that it is double-sided or multi-layered and that it comprises a heat- and weather-resistant sealing member (3a, 3b) filled in a conducting through-hole portion (7).
Claim 2
Dependent Claim
31 words
A printed circuit board, characterized in that it is double-sided or multi-layered and that it comprises a heat- and weather-resistant sealing member (3a, 3b) filled in a conducting through-hole portion (7).
Claim 3
Dependent Claim
20 words
A printed circuit board according to claim 1, further comprising an electronic wave-shielding layer (5) via an insulating layer (4).
Claim 4
Dependent Claim
26 words
A printed circuit board according to claim 1, wherein said sealing member (3a) is constituted by a thermosetting-type synthetic resin or a photosetting-type synthetic resin material.
Claim 5
Dependent Claim
44 words
A printed circuit board according to claim 1, wherein said sealing member (3b) is formed of a conductive synthetic resin material containing carbon, silver, copper, or the like, thereby allowing the two surfaces of said printed circuit board to be conductive with each other.
Claim 6
Dependent Claim
71 words
A printed circuit board according to claim 1, characterized by a) an insulating board (1); b) a through-hole (8) in said board (1) c) a conducting through-hole portion (7) comprising a sealing member (3a); d) an insulating layer (4) covering said insulating board (1) as well as said sealing member (3a); e) a wave-shielding layer (5) covering said insulating layer (4); f) a solder-resist layer (6) covering said wave-shielding layer (5).
References Cited (Backward Citations)
No citation records indexed.
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