3839111

Information

• Patent Grant
• 3839111

• References
• Source

• Patent Number

  3,839,111

• Date Filed

  Not available

• Date Issued

  Tuesday, October 1, 1974
  50 years ago

• CPC

  • H01L23/293 - Organic
  • H01L21/00 - Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
  • H01L21/31111 - by chemical means
  • H01L21/31144 - using masks
  • H01L23/4855 - Overhang structure
  • H01L23/522 - including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
  • H01L2924/0002 - Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
  • Y10S438/978 - forming tapered edges on substrate or adjacent layers

• US Classifications

  • 438 - Semiconductor device manufacturing: process
  • 216 - Etching a substrate: processes
  • 252 - Compositions
  • 257 - Active solid-state devices
  • 430 - Radiation imagery chemistry: process, composition, or product thereof