Electricity: conductors and insulators – Conduits – cables or conductors – Single duct conduits
Patent
1983-07-07
1985-10-15
McCarthy, Helen M.
Electricity: conductors and insulators
Conduits, cables or conductors
Single duct conduits
264 61, 361414, 427 96, 428137, 428901, 501 16, 501 54, 501 61, 501 62, C03C 308, H05K 103
Patent
active
045476250
ABSTRACT:
A method for manufacturing the insulating layers of a glass multilayer wiring board from a mixture of (1) 30-90 wt. % of a borosilicate glass consisting of 55-75 wt. % of SiO.sub.2, 13-25 wt. % of B.sub.2 O.sub.3, 5-13 wt. % of Al.sub.2 O.sub.3, each 1-5 wt. % of PbO, MgO, and BaO, and each 1-2 wt. % of Na.sub.2 O and K.sub.2 O and (2) 70-10 wt. % of a silica glass, is provided.
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Ikegami Akira
Sugishita Nobuyuki
Tanei Hirayoshi
Tosaki Hiromi
Hitachi , Ltd.
McCarthy Helen M.
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