2471898

Information

• Patent Grant
• 2471898

• References
• Source

• Patent Number

  2,471,898

• Date Filed

  Not available

• Date Issued

  Tuesday, May 31, 1949
  76 years ago

• CPC

  • H01L21/14 - Treatment of the complete device
  • H01L21/105 - Treatment of the surface of the selenium or tellurium layer after having been made conductive

• US Classifications

  • 438 - Semiconductor device manufacturing: process
  • 252 - Compositions
  • 257 - Active solid-state devices