3843541

Information

• Patent Grant
• 3843541

• References
• Source

• Patent Number

  3,843,541

• Date Filed

  Not available

• Date Issued

  Tuesday, October 22, 1974
  50 years ago

• CPC

  • C04B33/326 - under pressure
  • C04B33/32 - Burning methods
  • C04B35/26 - based on ferrites
  • C04B35/265 - Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
  • C04B35/2658 - Other ferrites containing manganese or zinc
  • G11B5/133 - with cores composed of particles
  • G11B5/1871 - Shaping or contouring of the transducing or guiding surface
  • H01F1/37 - in a bonding agent
  • Y10T29/49034 - Treating to affect magnetic properties
  • Y10T29/49048 - Machining magnetic material [e.g., grinding, etching, polishing]

• US Classifications

  • 252 - Compositions
  • 423 - Chemistry of inorganic compounds
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER