2840495

Information

• Patent Grant
• 2840495

• References
• Source

• Patent Number

  2,840,495

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1958
  67 years ago

• CPC

  • H01L21/322 - to modify their internal properties
  • C22F1/16 - of other metals or alloys based thereon
  • C30B31/02 - by contacting with diffusion material in the solid state
  • H01L21/00 - Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
  • H01L29/36 - characterised by the concentration or distribution of impurities in the bulk material
  • Y10S148/121 - Plastic temperature

• US Classifications

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