1981295

Information

• Patent Grant
• 1981295

• References
• Source

• Patent Number

  1,981,295

• Date Filed

  Not available

• Date Issued

  Tuesday, November 20, 1934
  90 years ago

• CPC

  • C09B1/266 - only sulfonated in the anthracene nucleus
  • C09B1/264 - sulfonated

• US Classifications

  • 552 - Organic compounds