2215556

Information

• Patent Grant
• 2215556

• References
• Source

• Patent Number

  2,215,556

• Date Filed

  Not available

• Date Issued

  Tuesday, September 24, 1940
  84 years ago

• CPC

  • C09B57/00 - Other synthetic dyes of known constitution
  • C09B1/08 - Dyes containing only OH-groups
  • C09B1/20 - Preparation from starting materials already containing the anthracene nucleus

• US Classifications

  • 008 - Bleaching and dyeing
  • 548 - Organic compounds
  • 552 - Organic compounds