2989394

Information

• Patent Grant
• 2989394

• References
• Source

• Patent Number

  2,989,394

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1961
  63 years ago

• CPC

  • C22B11/00 - Obtaining noble metals
  • B03B1/04 - by additives
  • C22B1/06 - Sulfating roasting
  • C22B13/00 - Obtaining lead
  • C22B15/0006 - by dry processes
  • C22B15/0017 - Sulfating or sulfiding roasting

• US Classifications

  • 423 - Chemistry of inorganic compounds