3905949

Information

• Patent Grant
• 3905949

• References
• Source

• Patent Number

  3,905,949

• Date Filed

  Not available

• Date Issued

  Tuesday, September 16, 1975
  49 years ago

• CPC

  • D21H21/28 - Colorants; Pigments or opacifying agents
  • C09B56/06 - Bis- or polystilbene azo dyes
  • C09B69/02 - Dyestuff salts

• US Classifications

  • 534 - Organic compounds
  • 162 - Paper making and fiber liberation
  • 562 - Organic compounds