2806984

Information

• Patent Grant
• 2806984

• References
• Source

• Patent Number

  2,806,984

• Date Filed

  Not available

• Date Issued

  Tuesday, September 17, 1957
  67 years ago

• CPC

  • H01L21/08 - Preparation of the foundation plate
  • H01L21/02425 - Conductive materials
  • H01L21/02491 - Conductive materials
  • H01L21/02521 - Materials
  • H01L21/02631 - Physical deposition at reduced pressure
  • H01L21/02667 - Crystallisation or recrystallisation of non-monocrystalline semiconductor materials
  • H01L21/10 - Preliminary treatment of the selenium or tellurium, its application to the foundation plate, or the subsequent treatment of the combination
  • H01L21/103 - Conversion of the selenium or tellurium to the conductive state

• US Classifications

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