3493443

Information

• Patent Grant
• 3493443

• References
• Source

• Patent Number

  3,493,443

• Date Filed

  Not available

• Date Issued

  Tuesday, February 3, 1970
  54 years ago

• CPC

  • H01L21/22 - Diffusion of impurity materials
  • 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
  • Y10S148/047 - Emitter dip
  • Y10S148/097 - Lattice strain and defects
  • Y10S148/151 - Simultaneous diffusion
  • Y10S438/914 - Doping

• US Classifications

  • 257 - Active solid-state devices
  • 148 - Metal treatment
  • 438 - Semiconductor device manufacturing: process