3311449

Information

• Patent Grant
• 3311449

• References
• Source

• Patent Number

  3,311,449

• Date Filed

  Not available

• Date Issued

  Tuesday, March 28, 1967
  57 years ago

• CPC

  • C22B34/1213 - by wet processes
  • C01B3/16 - using catalysts
  • C01B13/36 - by precipitation reactions in aqueous solutions
  • C01B17/62 - Methods of preparing sulfites in general
  • C01B33/12 - Silica Hydrates thereof
  • C01D5/14 - Preparation of sulfites
  • C01F7/066 - Treatment of the separated residue
  • C01F7/28 - with sulfurous acid
  • C01F7/30 - Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds

• US Classifications

  • 423 - Chemistry of inorganic compounds