2159506

Information

• Patent Grant
• 2159506

• References
• Source

• Patent Number

  2,159,506

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1939
  85 years ago

• CPC

  • C09B1/34 - sulfonated
  • C09B1/346 - only sulfonated in a substituent
  • C09B1/525 - N-aryl derivatives

• US Classifications

  • 552 - Organic compounds