4. Semiconductor device manufacturing: process
  5. Chemical etching
  6. Vapor phase etching

Herbert Schafer

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Bipolar transistor comprising carbon-doped semiconductor

Active solid-state devices (e.g. – transistors – solid-state diode – Heterojunction device – Bipolar transistor
Reexamination Certificate

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Bipolar transistor comprising carbon-doped semiconductor

Active solid-state devices (e.g. – transistors – solid-state diode – Heterojunction device – Bipolar transistor
Reexamination Certificate

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Cooling element for a metallurgical furnace

Metallurgical apparatus – Means for treating ores or for extracting metals – By means applying heat to work – e.g. – furnace
Patent

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Cooling element for a metallurgical furnace

Metallurgical apparatus – Means for treating ores or for extracting metals – By means applying heat to work – e.g. – furnace
Patent

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Deasher

Furnaces – Ash receiving and handling devices – Fly ash disposers
Patent

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Profile ID: LFUS-PAI-P-207280

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