3868722

Information

• Patent Grant
• 3868722

• References
• Source

• Patent Number

  3,868,722

• Date Filed

  Not available

• Date Issued

  Tuesday, February 25, 1975
  49 years ago

• CPC

  • H01L27/0755 - Vertical bipolar transistor in combination with diodes, or capacitors, or resistors
  • H01L27/0825 - Combination of vertical direct transistors of the same conductivity type having different characteristics,(
  • Y10S148/025 - Deposition multi-step
  • Y10S148/085 - Isolated-integrated
  • Y10S148/098 - Layer conversion

• US Classifications

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