2140538

Information

• Patent Grant
• 2140538

• References
• Source

• Patent Number

  2,140,538

• Date Filed

  Not available

• Date Issued

  Tuesday, December 20, 1938
  86 years ago

• CPC

  • C09B29/02 - from diazotised o-amino-hydroxy compounds
  • C09B29/0025 - from diazotized amino heterocyclic compounds
  • D06P3/34 - material containing ester groups

• US Classifications

  • 008 - Bleaching and dyeing
  • 534 - Organic compounds