2457169

Information

• Patent Grant
• 2457169

• References
• Source

• Patent Number

  2,457,169

• Date Filed

  Not available

• Date Issued

  Tuesday, December 28, 1948
  76 years ago

• CPC

  • H01L21/105 - Treatment of the surface of the selenium or tellurium layer after having been made conductive
  • H01L21/02521 - Materials
  • H01L21/02631 - Physical deposition at reduced pressure
  • H01L21/02667 - Crystallisation or recrystallisation of non-monocrystalline semiconductor materials
  • H01L21/103 - Conversion of the selenium or tellurium to the conductive state
  • H01L21/145 - Ageing

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 148 - Metal treatment
  • 257 - Active solid-state devices