2176444

Information

• Patent Grant
• 2176444

• References
• Source

• Patent Number

  2,176,444

• Date Filed

  Not available

• Date Issued

  Tuesday, October 17, 1939
  85 years ago

• CPC

  • C01F7/10 - by treating aluminous minerals with alkali sulfates and reducing agents

• US Classifications

  • 423 - Chemistry of inorganic compounds