2997634

Information

• Patent Grant
• 2997634

• References
• Source

• Patent Number

  2,997,634

• Date Filed

  Not available

• Date Issued

  Tuesday, August 22, 1961
  63 years ago

• CPC

  • H01L29/73 - Bipolar junction transistors
  • H01L29/00 - Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier
  • H01L29/02 - Semiconductor bodies; Multistep manufacturing processes therefor
  • H01L29/06 - characterised by their shape characterised by the shapes, relative sizes, or dispositions of the semiconductor regions; characterised by the concentration or distribution of impurities within semiconductor regions
  • H01L29/66409 - Unipolar field-effect transistors
  • H01L29/80 - with field effect produced by a PN or other rectifying junction gate

• US Classifications

  • 257 - Active solid-state devices
  • 148 - Metal treatment