3632312

Information

• Patent Grant
• 3632312

• References
• Source

• Patent Number

  3,632,312

• Date Filed

  Not available

• Date Issued

  Tuesday, January 4, 1972
  53 years ago

• CPC

  • C01B17/52 - by roasting sulfides
  • C01G49/08 - Ferroso-ferric oxide (Fe3O4)

• US Classifications

  • 423 - Chemistry of inorganic compounds