2221131

Information

• Patent Grant
• 2221131

• References
• Source

• Patent Number

  2,221,131

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1940
  84 years ago

• CPC

  • C09B51/00 - Nitro or nitroso dyes
  • C09B43/11 - by introducing hydrocarbon radicals or substituted hydrocarbon radicals on primary or secondary amino groups
  • C09B56/005 - Azo-nitro dyes

• US Classifications

  • 562 - Organic compounds