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2143824
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Information
Patent Grant
2143824
References
Source
Patent Number
2,143,824
Date Filed
Not available
Date Issued
Tuesday, January 10, 1939
85 years ago
CPC
H01L21/02425 - Conductive materials
H01L21/02565 - Oxide semiconducting materials not being Group 12/16 materials
H01L21/02614 - Transformation of metal
H01L21/161 - Preparation of the foundation plate, preliminary treatment oxidation of the foundation plate, reduction treatment
US Classifications
428 - Stock material or miscellaneous articles
148 - Metal treatment
174 - Electricity: conductors and insulators
252 - Compositions
257 - Active solid-state devices
420 - Alloys or metallic compositions
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