1990954

Information

• Patent Grant
• 1990954

• References
• Source

• Patent Number

  1,990,954

• Date Filed

  Not available

• Date Issued

  Tuesday, February 12, 1935
  89 years ago

• CPC

  • C09B5/50 - Preparation by alkaline melting of 2-amino-anthraquinones

• US Classifications

  • 544 - Organic compounds