3857157

Information

• Patent Grant
• 3857157

• References
• Source

• Patent Number

  3,857,157

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1974
  50 years ago

• CPC

  • C04B33/326 - under pressure
  • B22F3/1283 - Container formed as an undeformable model eliminated after consolidation
  • C04B33/32 - Burning methods
  • C04B35/583 - based on boron nitride
  • C04B35/593 - obtained by pressure sintering

• US Classifications

  • 419 - Powder metallurgy processes
  • 076 - Metal tools and implements, making