Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Masahiro Kato0
Junichiro Kogure0
Date of Patent
May 8, 2007
0Patent Application Number
106739390
Date Filed
September 29, 2003
0Patent Primary Examiner
Patent abstract
A sealing material for sealing an envelope of an electron tube. The sealing material comprises 0.01˜2.0 wt % of fine particle selected from the group consisting of SiO2, Al2O3 and ZrO2 having a particle diameter of 0.001˜0.1 μm, P2O5—SnO type low melting glass and thermal expansion-controlling low melting ceramics.
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