2763640

Information

• Patent Grant
• 2763640

• References
• Source

• Patent Number

  2,763,640

• Date Filed

  Not available

• Date Issued

  Tuesday, September 18, 1956
  68 years ago

• CPC

  • C09B56/04 - Stilbene-azo dyes
  • C09B43/12 - by acylation of amino groups
  • C09B45/24 - Disazo or polyazo compounds
  • C09B45/28 - containing copper
  • C09B45/38 - Preparation from compounds with -OH and -COOH adjacent in the same ring or in peri position

• US Classifications

  • 534 - Organic compounds