Plastic and nonmetallic article shaping or treating: processes – Outside of mold sintering or vitrifying of shaped inorganic... – Particular or specific manner of positioning – arranging – or...
Reexamination Certificate
2005-11-16
2009-08-04
Lopez, Carlos (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
Outside of mold sintering or vitrifying of shaped inorganic...
Particular or specific manner of positioning, arranging, or...
Reexamination Certificate
active
07569177
ABSTRACT:
A method of producing a ceramic multilayer substrate involves producing a green composite laminate11containing first and second shrink-suppressing layers formed on the main surfaces of a green multilayer mother substrate12having a plurality of ceramic green layers17containing ceramic powder, the shrink-suppressing layers containing a sintering-difficult powder substantially incapable of being sintered under the sintering conditions for the ceramic powder; forming first grooves16extending from the first shrink-suppressing layer13side into a part of the multilayer mother substrate12; firing the composite laminate11; removing the first and second shrink-suppressing layers13and14and taking out the sintered multilayer mother substrate11; and dividing the multilayer mother substrate12along the grooves16, and obtaining a plurality of the ceramic multilayer substrates. Thereby, shrinkage in the plan direction at firing can be suppressed. Thus, a ceramic multilayer substrate having a high dimensional accuracy and a high reliability can be produced with a high production efficiency.
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Kawakami Hiromichi
Saitoh Yoshifumi
Dickstein & Shapiro LLP
Kemmerle, III Russell J
Lopez Carlos
Murata Manufacturing Co. Ltd.
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