3647580

Information

• Patent Grant
• 3647580

• References
• Source

• Patent Number

  3,647,580

• Date Filed

  Not available

• Date Issued

  Tuesday, March 7, 1972
  52 years ago

• CPC

  • H01L27/0777 - Vertical bipolar transistor in combination with capacitors only
  • H01L21/761 - PN junctions
  • H01L21/8222 - Bipolar technology
  • Y10S148/037 - Diffusion-deposition
  • Y10S148/049 - Equivalence and options
  • Y10S148/085 - Isolated-integrated

• US Classifications

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