2492543

Information

• Patent Grant
• 2492543

• References
• Source

• Patent Number

  2,492,543

• Date Filed

  Not available

• Date Issued

  Tuesday, December 27, 1949
  75 years ago

• CPC

  • H01C7/046 - Iron oxides or ferrites
  • C04B35/01 - based on oxide ceramics
  • C04B35/12 - based on chromium oxide
  • C04B35/42 - based on chromites
  • C04B35/44 - based on aluminates
  • H01C7/04 - having negative temperature coefficient

• US Classifications

  • 252 - Compositions
  • 501 - Compositions: ceramic