3777227

Information

• Patent Grant
• 3777227

• References
• Source

• Patent Number

  3,777,227

• Date Filed

  Not available

• Date Issued

  Tuesday, December 4, 1973
  51 years ago

• CPC

  • H01L29/00 - Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier
  • H01L21/00 - Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
  • H01L29/73 - Bipolar junction transistors
  • Y10S148/04 - Dopants, special
  • Y10S148/051 - Etching
  • Y10S148/085 - Isolated-integrated
  • Y10S148/121 - Plastic temperature
  • Y10S148/135 - Removal of substrate
  • Y10S148/151 - Simultaneous diffusion
  • Y10S148/157 - Special diffusion and profiles

• US Classifications

  • 257 - Active solid-state devices
  • 148 - Metal treatment