1841997

Information

• Patent Grant
• 1841997

• References
• Source

• Patent Number

  1,841,997

• Date Filed

  Not available

• Date Issued

  Tuesday, January 19, 1932
  93 years ago

• CPC

  • C07C309/53 - the carbon skeleton containing carbon atoms of quinone rings
  • C09B1/24 - sulfonated

• US Classifications

  • 552 - Organic compounds