2204749

Information

• Patent Grant
• 2204749

• References
• Source

• Patent Number

  2,204,749

• Date Filed

  Not available

• Date Issued

  Tuesday, June 18, 1940
  84 years ago

• CPC

  • C09B1/264 - sulfonated
  • C09B1/26 - Dyes with amino groups substituted by hydrocarbon radicals
  • C09B1/30 - sulfonated
  • C09B1/51 - N-substituted amino-hydroxy anthraquinone
  • C09B1/523 - N-substituted amino and hydroxy anthraquinone

• US Classifications

  • 552 - Organic compounds
  • 564 - Organic compounds