3847919

Information

• Patent Grant
• 3847919

• References
• Source

• Patent Number

  3,847,919

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1974
  50 years ago

• CPC

  • C07D471/04 - Ortho-condensed systems
  • C07D217/22 - with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
  • C07D471/14 - Ortho-condensed systems
  • C09B43/003 - Cyclisation of azo dyes; Condensation of azo dyes with formation of ring
  • Y10S514/826 - Asthma

• US Classifications

  • 544 - Organic compounds
  • 514 - Drug, bio-affecting and body treating compositions
  • 534 - Organic compounds
  • 546 - Organic compounds