3202657

Information

• Patent Grant
• 3202657

• References
• Source

• Patent Number

  3,202,657

• Date Filed

  Not available

• Date Issued

  Tuesday, August 24, 1965
  59 years ago

• CPC

  • C09B43/003 - Cyclisation of azo dyes; Condensation of azo dyes with formation of ring
  • C07D291/06 - Six-membered rings
  • C09B43/00 - Preparation of azo dyes from other azo compounds
  • C09B43/11 - by introducing hydrocarbon radicals or substituted hydrocarbon radicals on primary or secondary amino groups

• US Classifications

  • 544 - Organic compounds
  • 534 - Organic compounds