1680021

Information

• Patent Grant
• 1680021

• References
• Source

• Patent Number

  1,680,021

• Date Filed

  Not available

• Date Issued

  Tuesday, August 7, 1928
  96 years ago

• CPC

  • D06M11/54 - with sulfur dioxide with sulfurous acid or its salts
  • D06M11/34 - with oxygen, ozone or ozonides
  • D06M11/38 - Oxides or hydroxides of elements of the first Group of the Periodic System
  • D06M11/53 - with hydrogen sulfide or its salts with polysulfides
  • D06M11/60 - Ammonia as a gas or in solution
  • D06M11/64 - with nitrogen oxides with oxyacids of nitrogen or their salts
  • D06M11/75 - with phosgene with compounds containing both carbon and sulfur

• US Classifications

  • 008 - Bleaching and dyeing